Land Use Change: Science and Policy Review...Wheat Triticum aestivum E,S 32 11 1600 400 high high high Oats Avena sativa E,S 25 6 1200 400 high high high Rye Secale cereale E,S 32

All rights reserved • Land Use Change: Science and Policy Review • Hart Energy Consulting • CABI

www.hartenergyconsulting.com

October 2010

Prepared By:

Hart Energy ConsultingCABI

Hart Energy Consulting1616 S. Voss, Suite 1000Houston, Texas 77057, USA

CABI Head OfficeNosworthy WayWallingford, OxfordshireOX10 8DE, United Kingdom

Land Use Change: Science and Policy Review

Biofuels and Land Use Change: A Science and Policy Review

1 Hart Energy Consulting | CABI | October 2010

Table of ConTenTsI. ExecutiveSummary...........................................................................................................2

Introduction:.Why.Is.Biofuels.LUC.Important?........................................................................3

2. LandUseImplicationsofIncreasedBiofuelProduction............................................6Bringing.Land.That.Is.Not.in.Agricultural.Use.into.Production.................................................7Replacing.Existing.Crops.with.Biofuels...................................................................................8Cultivating.Degraded,.Abandoned.Land.or.Land.That.Is.Considered.Marginal.......................8Intensifying.Land.Use.without.Reducing.Crop.Production......................................................9Conclusion.............................................................................................................................11

3. BiofuelsFeedstockLCAs,EnergyBalanceandCarbonFootprint:HowItRelatestoILUC..................................................................11Biofuels.LCAs........................................................................................................................11Energy.Balance......................................................................................................................13Carbon.Footprint....................................................................................................................13Conclusion.............................................................................................................................16

4. AdditionalEnvironmentalImpactsLinkedtoILUC..................................................17Biodiversity.Concerns............................................................................................................17Potential.Impacts.on.Water.Resources.................................................................................18Conclusion.............................................................................................................................19

5. ExamplesofSelectBiofuelsILUCStudies..................................................................19The.Many.Approaches.to.Modelling.ILUC.............................................................................19The.Searchinger.Analysis.of.Biofuels.ILUC...........................................................................21Conclusion.............................................................................................................................23

6. RegulatoryandLegislativeActionsUndertakentoControlILUCfromBiofuels.......................................................................................23European.Union:.Renewable.Energy.Directive......................................................................23United.Kingdom:.Renewable.Transport.Fuel.Obligation........................................................25United.States:.Renewable.Fuels.Standard.Program.............................................................26California:.Low-Carbon.Fuels.Standard..................................................................................27Conclusion.............................................................................................................................28

7. OtherPolicyApproachesthatAddressBiofuelsILUCConcerns...........................29Brazil......................................................................................................................................29China......................................................................................................................................30India.......................................................................................................................................31Malaysia.................................................................................................................................31The.Philippines......................................................................................................................32Conclusion.............................................................................................................................33

8. ILUCandPotentialImplicationsfortheEmergingGlobalBiofuelsMarket.......34Ethanol.Outlook.to.2020........................................................................................................34Biodiesel.Outlook.to.2020.....................................................................................................35

9. Conclusion:BalancingtheRisksandUncertainties.................................................38

10.Acknowledgement...........................................................................................................41


Hart Energy Consulting | CABI | October 2010 2

I. exeCuTIve summaryNever.before.has.humanity.had.to.think.so.carefully.about.how.it.uses.land..Until.recent.times,.there.has.been.a.widespread.assumption.that.there.are.always.new.lands.available,.with.no.long.term.global.consequences.for.exploiting.them...This.era.has.now.ended...As.the.world’s.popula-tion.and.consequently,.food.and.energy.needs,.increases,.so.does.the.pressure.on.land.to.meet.these.needs...With.specific.respect.to.biofuels,.as.production.continues.to.grow.in.response.to.demand,.the.pressure.to.expand.feedstock.crop-growing.areas.continues.to.grow.as.well...This.in.turn.leads.to.the.possibility.of.land.use.changes.

It.is.the.purpose.of.this.paper.to.provide.a.concise.review.and.summary.of.land.use.change.(LUC).issues.specifically.as.it.relates.to.the.increasing.production.and.consumption.of.biofuels..This.paper.attempts.to.summarise,.add.insight.and.provide.understanding.of.the.complexities.of.these.issues.from.a.scientific.and.policy.standpoint.in.a.very.brief.manner.

This.paper. is.not.a.scientific.study.and.does.not.provide.a.comprehensive.overview.of.all.the.mounting.analyses.that.have.been.conducted.in.this.area..It.does not.advocate.a.particular.position.be.taken.on.the.issue...In.addition,.this.paper.does.not.address.other.issues.that.have.been.raised.in.the.context.of.the.current.discussions.surrounding.LUC.though.we.acknowledge.them.here..For.example,.the.question.has.been.raised.about.properly.allocating.LUC.to.biofuels.feedstock.crops.versus.non-biofuels.crops...Stakeholders.have.questioned.why.LUC.should.be.addressed.for.biofuels.and.not.other.economic.activities,.including.fossil.fuels..

Rather,.we.have.selected.key.studies.and.analyses.that.have.been.peer reviewed.to.present.examples.and.highlight.the.biofuels.LUC.issues.at.hand..This.paper.has.been.peer.reviewed.by.a.diverse.and.select.group.of.experts.and.we.are.most.grateful.to.them.for.their.time,.feedback.and.assistance.in.developing.this.paper...For.those.readers.interested.in.further.study.of.biofuels.LUC,.a.comprehensive.bibliography.of.sources.is.available.both.at.the.back.of.this.paper.and.further.documentation.can.be.found.online.through.the.Biofuels.Information.Exchange,.located.on.the.web.at:.http://biofuelexperts.ning.com/...A.forum.for.discussion.is.available.on.the.same.site...As.the.current.body.of.work.on.biofuels.LUC.expands,.we.invite.authors.to.contribute.their.work.there.

LUC.is.a.complex.process.caused.by.the.interaction.of.natural.and.social.systems.at.different.temporal.and.spatial.scales.(Rindfuss.et.al.2004).and.large.numbers.of.variables.are.required.to.be.input;.for.example,.landholders’.experience,.family.structure,.economic.and.technical.resources.and.the.socioeconomic.context...LUC.and.LUC.patterns.are.created.by.actors.and.they.interact.and.collaborate.in.a.variety.of.contexts.(as.individuals,.families,.communities,.or.corporations).(Robiglio.et.al.2003)..LUC.can.be.sub-divided.into:

n. Direct.LUC.(DLUC),.which.occurs.in situ.which.results.from.a.commercial.decision.as.part.of.a.specific.supply.chain.for.a.specific.product.e.g..if.a.field.is.changed.from.growing.wheat.to.oil.seed.rape,.and

n. Indirect.LUC.(ILUC),.where.other.land.is.changed.as.a.consequence.of.the.direct.change..For.example,.if.less.wheat.is.grown,.other.lands.may.be.pressed.into.service.to.supply.the.shortfall..This.could.include.LUC.in.another.country.or.continent.

Figure.1.presents.a.diagrammatic.view.of.DLUC.and.ILUC.

If.there.are.unutilized.agricultural.lands.available.then.ILUC.may.be.mostly.uncontroversial..Another.uncontroversial.option.is.to.increase.output.on.the.same.land.by.increasing.crops.yields.and/or.using.lands.in.new.ways.(e.g..double-cropping,.pasture.intensification,.etc.)...The.problem.arises.when.other.lands,.including.forest.and.savannah,.are.pressed.into.service.which.may.re-sult.in.increase.in.greenhouse.gas.(GHG).emissions,.as.well.as.ecosystem.service.losses..The.

http://biofuelexperts.ning.com/

http://dx.doi.org/doi:10.1073/pnas.0401545101



concern.about.ILUC.is.fundamentally.about.the.sheer.scale.of.production.that.may.be.expected.of.the.biofuel.industry.if.it.is.to.contribute.significantly.to.reducing.GHG.

Serious.consideration.of.biofuel-related.ILUC.is.a.new.phenomenon.that.was.spurred.by.a.paper.by.Searchinger.et.al.(2008)..Before.that,.LCAs.of.the.“well-to-wheel”.type.were.mostly.attributional,.i.e.,.consisting.of.a.linear.chain-like.series.of.analytical.steps,.which.did.not.carry.out.a.consequential.analysis,.i.e.,.an.assessment.of.nonlinear.feedback-like.effects..The.Searchinger.paper.suggested.that.when.including.ILUC,.the.previously.favourable.GHG-saving.crops.of.maize.and.cellulosic.ethanol.systems.turned.into.net.producers.of.GHG.emissions...For.those.govern-ments.looking.to.biofuels.as.a.strategy.(among.others).to.reduce.GHG.emissions,.the.Searchinger.paper.raised.serious.concerns.and.new.efforts.were.launched,.particularly.in.the.U.S..and.Europe,.to.study.biofuels.LUC.

Introduction: Why Is biofuels luC Important?

Biofuels.can.be.solid,.liquid,.or.gaseous.and.are.derived.from.biomass.that.can.be.combusted.to.produce.heat.or.power...The.current.focus.on.biofuels.is.on.those.that.can.be.used.as.trans-portation.fuel.in.internal.combustion.engines..These.include.bioethanol.from.starch.and.sugar.crops.such.as.sugar.cane,.maize,.sorghum,.cassava,.sweet.potato;.biodiesels.from.soy.oil,.palm.oil,.jatropha,.pongamia,.oil.seed.rape.(canola),.and.waste.oils;.sources.of.lignin-cellulose.such.as.switch.grass,.miscanthus,.crop.residues,.tree.prunings;.algal.fuels...

The.majority.of.biofuels.currently.produced.are.from.maize,.sugar.cane,.soy.oil,.palm.oil.and.oil.seed.rape...Lignin-cellulosic.feedstocks.must.undergo.further.processing.as.they.need.to.be.first.processed.to.sugars,.either.by.heating.with.acid.or.converted.using.cellulase.enzymes.extracted.from.fungi..Algal.biofuels,.at.an.earlier.developmental.stage.than.cellulosics,.may.have.promise.since.they.could.be.grown.on.waste.land,.using.waste.carbon.dioxide.and.waste.water..Into.the.future,.more.investments.in.cellulosic.and.algal.biofuels.are.expected.(DBCCA.2009)..

figure 1: a diagrammatic explanation of IluC (after bauen and Howes in Woods, 2009).

Direct land use change

Indirect land use change

http://dx.doi.org/10.1126/science.1151861



Biofuels.feedstocks.are.highly.diverse.in.their.input.requirements,.alternative.uses.and.climatic.requirements.and.are.grown.in.many.different.contexts.globally..LCAs.of.different.biofuel.crops.reveal.large.differences.in.yields,.climatic.requirements,.energy.balances,.and.water.and.carbon.footprints...This.review.will.focus.on.the.production.of.agricultural.crops.or.feedstocks.suitable.for.bioethanol.and.biodiesel.production.because.these.compete.with.land,.energy.and.water.use.for.food.production...Crops.that.can.be.used.as.biofuels.are.listed.in.Table.1,.with.the.temperature.and.water.requirements.as.well.as.their.alternate.food.values...It.should.be.noted.that.the.figures.in.the.table.do.not.indicate.optimal.conditions,.which.may.be.more.restricted..

Common name Genus sp biofuel

type

max temp (oC)

min temp (oC)

max rainfall (mm/annum)

min rainfall (mm/annum)

protein value

edible oil value

edible carbohydrate

Oilseed rape Brassica napus D 40 6 1500 400 high

Linseed Linum usitatissimum D 32 4 1300 250 medium

Field mustard Sinapis alba D 27 7 1200 600

Hemp Cannabis sativa D,S 28 5 1500 600

Sunflower Helianthus annus D 39 15 1500 350 high

Safflower Carthamus tintorius D 45 20 1300 400 high

Castor Ricinus communis D 38 17 2000 500

Olive Olea europea D 42 7 1300 200 low high

Groundnut Arachis hypogaea D 45 19 2000 450 high high

Sweet potato

Ipomoea batatas E 45 17 1400 750 low high

Cassava Manihot esculenta E 45 18 5000 500 low (leaves) high

Barley Hordeum vulgare E,S 35 8 2000 250 high high high

Wheat Triticum aestivum E,S 32 11 1600 400 high high high

Oats Avena sativa E,S 25 6 1200 400 high high highRye Secale cereale E,S 32 11 1600 400 high high high

Potato Solanun tuberosum E 25 5 1500 500 medium high

Sugar beet Beta vulgaris E 25 5 1500 500 high

Sugarcane Saccharum officinarun E 41 16 > 4000 1000 high

Sorghum Sorghum bicolor S,E 40 16 700 300 medium high

Maize Zea mays S,E 40 9 2000 450 high highReed canary

grassPhalaris

arundinacea S 38 1 2000 600

Miscanthus Miscanthus spp. S 40 11 1500 600

Eucalyptus Eucalyptus globulus S,D 36 6 2500 400

Eucalyptus Eucalyptus camaldulensis S 36 7 2500 400

Eucalyptus Eucalyptus grandis S 36 10 2500 400

Jatropha Jatropha curcas D 2000 300African oil

palmElaeis

guineensis D 3000 1000 high

Pongamia Pongamia pinnata D 2000 300

Table 1: Climatic requirements of crops that can be used as biofuels, noting values as foodstuffs (adapted from Tuck et al 2006) Key: D biodiesel; s solid biofuel; e, bioethanol.



As.it.pertains.specifically.to.biofuels,.an.ILUC.impact.may.be.triggered.when.an.increase.in.the.demand.for.a.crop-based.biofuel.begins.to.drive.up.prices.for.the.necessary.feedstock.crop...This.price.increase.causes.farmers.to.devote.a.larger.proportion.of.their.cultivated.acreage.to.that.feed-stock.crop..Supplies.of.the.displaced.food.and.feed.commodities.subsequently.decline,.leading.to.higher.prices.for.those.commodities..In.the.past,.many.farmers.have.brought.non-agricultural.lands.into.production.as.a.low-cost,.high-benefit.option.to.take.advantage.of.higher.commodity.prices..These.land.use.conversions.release.the.carbon.sequestered.in.soils.and.vegetation..The.resulting.carbon.emissions.constitute.the.ILUC.impact.of.increased.biofuel.production...The.land.use.conversions.may.also.lead.to.a.loss.of.ecosystem.functions.(e.g..biodiversity.loss).

Based.on.the.work.done.to.date,.and.in.particular.the.last.two.to.three.years,.crop-based.bio-fuels.may.contribute.to.some.ILUC.impacts...It.is.not.clear.what.the.magnitude.of.the.impact.actually.is.due.to.the.complexity.of.the.issues.involved.in.assessing.LUC.generally.and.ILUC.spe-cifically...The.tools.for.estimating.and.analysing.ILUC.impacts.from.biofuels.are.few.and.relatively.new...And,.the.ranges.of.analyses.conducted.have.produced.varying.results.that.are.dependent.on.the.assumptions.used...Because.of.this.evident.complexity,.it.is.worth.noting.some.of.the.uncertainties,.even.though.they.are.difficult.to.rank.and.quantify,.and.though.some.are.more.important.than.others:.

n. Much.of.the.biofuel.yields.data.is.too.inaccurate.to.calculate.potential.GHG.effects,.energy.ratios.and.profits.

n. Energy.return.on.energy.invested.(EROI),.a.fundamental.issue.that.has.been.insufficiently.researched.

n. Marginal.and.abandoned.lands.and.the.extent.to.which.they.can.both.be.identified.and.re-habilitated...In.fact,.a.common.definition.for.marginal.land.does.not.currently.exist.(UNEP.2009).

n. The.extent.to.which.any.newly.exploited.land.will.be.needed.for.food.and.the.extent.to.which.old.land.can.be.made.more.productive.

n. The.use.of.fertilizers.and.the.optimal.amount.to.use.to.minimize.GHG.releases,.especially.of.nitrous.oxide?

n. Uncertainties.about.indirect.effects..The.Searchinger.et.al.(2008).paper,.despite.numerous.criticisms,.revealed.a.potential.flaw.in.our.understanding.of.biofuels.LUC.and.created.new.discussion.about.the.importance.of.carefully.considering.biofuels.DLUC.and.ILUC..As.this.may.include.cross-border.effects,.the.complexities.of.estimating.the.effects.are.obvious.

n. Soil.carbon.loss.and.sequestration,.which.depends.greatly.on.the.soils.in.question.and.how.the.land.is.farmed.

n. Uncertainties.in.the.science.itself.which.has.been.outpaced.by.biofuels.commercialization.and.scale-up.over.the.last.several.years.

n. A.lack.of.a.broad.interdisciplinary.approach.to.the.subject..We.understand.for.instance.that.LCA.scientists.had.recognized.the.ILUC.problem,.but.avoided.it.because.of.the.problems.of.indeterminacy.

As.the.biofuels.LUC.issue.has.come.to.the.fore,.governments.have.pressed.forward.with.set-ting.and.implementing.mandatory.biofuels.programs..By.end.of.2010,.approximately.39.countries.have.already. implemented.or.are.preparing.to. implement.mandatory.biofuels.programs.(Hart.2010).and.most.do.not.address.biofuels.LUC...Several.governments.have.attempted.to.address.LUC.concerns.in.their.biofuels.programs,.and.have.undertaken.their.own.biofuels.LUC.analyses...They.have.ultimately.concluded.that.the.uncertainties.involved.should.not.prevent.the.develop-ment.and.implementation.of.policy.that.“factors.in”.biofuels.ILUC...

Some.governments.have.instituted.an.“ILUC.penalty”.or.“ILUC.factor”.in.their.biofuels.pro-grams.to.account.for.the.GHG.emissions.caused.by.ILUC.of.certain.biofuels.feedstocks...The.introduction.of.an.ILUC.factor.is.meant.to.disincentivise.the.use.of.biofuels.that.may.cause.ILUC.such.as.deforestation.and.allocate.poorer.GHG.savings.to.these.specific.biofuels..Notably,.some.governments.in.structuring.their.biofuels.programs.have.not.implemented.an.“ILUC.factor”.but.




have.set.policies.that.address.land.use.management.and.best.agricultural.practice.for.biofuels.feedstock.crops...Notably,.many.of.these.governments.set.these.policies.in.conjunction.with.their.biofuels.programs.and.began.to.address.issues.related.to.LUC.and.biofuels.before.ILUC.became.a.significant.topic.of.discussion.in.the.biofuels.world.

As.most.of.the.biofuels.policies.that.include.an.“ILUC.factor”.are.currently.being.implemented,.it.is.not.clear.at.this.time.whether.such.factor.will.actually.result.in.reducing.ILUC...As.an.example,.an.ILUC.factor.that.disfavours.the.use.of.palm.oil.as.a.biodiesel.feedstock.will.not.necessarily.curtail.the.use.of.palm.oil.globally.nor.prevent.the.effects.that.have.been.associated.to.palm.oil.production.growth.(e.g..deforestation.and.biodiversity.loss)...The.palm.oil.may.not.be.used.for.biofuels.production.and.consumption.in.the.country.with.the.ILUC.factor.policy.in.place,.but.could.be.used.in.a.country.that.does.not.have.such.a.policy...Moreover,.such.a.policy.would.not.likely.curtail.the.use.of.palm.oil.as.an.important.global.food.commodity.

Even.so,.the.way.in.which.land.is.allocated.and.used.has.become.important.as.never.before.especially.as.population,.income.and.consequently,.food.and.energy.demand,.increases.in.the.coming.years...Note.that.while.biofuels.provided.just.1.8%.of.the.world’s.transport.fuel.in.2007.(UNEP.2009),.this.is.expected.to.increase...According.to.the.International.Energy.Agency.(IEA),.biofuels.are.projected.to.represent.9%.of.total.transport.fuel.demand.in.2030.(IEA.2009)...De-mand.for.petroleum.products.is.expected.to.grow.1.6%.per.year.through.2030.(Hart.2009)...For.many.stakeholders.and.policymakers,.this.is.why.biofuels.LUC.is.important.to.consider...

This.paper.is.structured.to.address.in.brief.the.following.topics:n. Land.use.implications.of.increased.biofuel.productionn. Biofuels.feedstock.LCAs,.energy.balance.and.carbon.footprint:.how.it.relates.to.ILUCn. Additional.environmental.impacts.related.to.ILUCn. Examples.of.select.biofuels.ILUC.studiesn. Regulatory.and.legislative.actions.undertaken.to.control.ILUC.from.biofuelsn. Other.legislative.and.regulatory.approaches.that.address.ILUCn. ILUC.and.the.emerging.global.biofuels.market

The.review.concludes.with.some.recommendations.for.next.steps...These.recommendations.include.more.experimentation.and.modelling,.which.is.already.occurring;.the.establishment.of.standard.methodologies.to.evaluate.LUC.from.biofuels;.quantifying.available.marginal.land;.and,.establishing.effective.land.use.management.and.best.agriculture.practice.policies.for.biofuels.feedstock.crops...We.also.suggest.the.development.of.a.knowledge.product.or.tool.kit.to.help.interested.countries.plan.rationally.for.the.future.as.they.develop.their.biofuels.programs...

2. lanD use ImplICaTIons of InCreaseD bIofuel proDuCTIonLand.use.implications.of.increased.biofuel.production.will.depend.on.the.crop.grown.and.the.context.in.which.it.is.grown...With.specific.respect.to.biofuels,.as.production.continues.to.grow.in.response.to.demand,.the.pressure.to.expand.feedstock.crop-growing.areas.continues.to.grow.as.well...This.in.turn.leads.to.the.possibility.of.LUC.(both.DLUC.and.ILUC).that.in.the.biofuels.context.may.include.the.following.scenarios...Biofuel.feedstock.crops.may.be.grown.by:

n. Bringing.land.that.is.not.in.agricultural.use.into.production;.n. Replacing.existing.food.and.fibre.crops.with.biofuels.feedstock.crops;n. Cultivating.degraded,.abandoned.land.or.land.that.is.considered.marginal;n. Intensifying.land.use.without.reducing.crop.production,.including.improving.yields,.technolo-

gies.and.integrating.agriculture.and.livestock.production.

None.of.these.scenarios.present.easy.solutions.to.the.complex.issue.of.LUC,.even.for.the.last.two.scenarios.concerning.new,.non-food.feedstocks.and.increasing.yields.on.existing.lands....



According.to.the.Millennium.Ecosystem.Assessment.(MEA.2005).nearly.all.of.the.world’s.suitable.land.is.already.under.cultivation:.“Although.Africa.and.Latin.America.contain.the.majority.of.the.world’s.remaining.stock.of.potentially.cultivatable.lands,.most.of.this.currently.supports.rain.forest.and.grassland.savannas.that.provide.many.other.ecosystem.services.and.are.crucial.habitats.for.fauna.and.flora.in.natural.ecosystems”.(Bruinsma.2003).

bringing land That Is not in agricultural use into production

Campbell.et.al.(2008).estimated.the.global.potential.for.bioenergy.on.abandoned.agriculture.lands.to.be.less.than.8%.of.current.primary.energy.demand..In.the.case.of.developing.countries,.Young.(1999).concluded.that.the.major.assessments.by.international.bodies.and.research.organizations.greatly.over-estimate.the.extent.of.spare.land,.that.is,.land.available.for.cultivation.but.presently.uncultivated..The.reasons.given.are:

n. An.over-estimation.of.the.extent.of.cultivable.land,.through.inclusion.of.hills.and.other.un-cultivable.areas,.that.are.individually.small.but.of.substantial.total.extent;

n. An.under-estimation.of.land.already.cultivated,.statistics.for.which.are.demonstrably.of.great.unreliability;

n. Failure.to.take.sufficient.notice.of.the.considerable.requirements.of.other.land.uses,.notably.water.supply,.nature.conservation,.human.settlements,.and.forest.

Making.speculative.adjustments.to.allow.for.each.of.these.causes,.Young.found.that.a.sup-posed.land.balance.of.50%.is.reduced.to.one.of.between.3%.and.25%.of.the.present.cultivable.land..If.this.is.correct,.as.an.order.of.magnitude,.then.estimates.of.the.total.spare.land.in.the.developing.world,.and.those.for.individual.countries,.should.be.reduced.to.half.or.less.the.values.given.by.current.estimates...We.note,.however,.this.is.still.a.significant.area.

The.MEA.notes.that.in.many.parts.of.North.America,.Europe,.Japan.and.China,.where.produc-tivity.has.grown.faster.than.demand,.land.is.increasingly.being.withdrawn.from.cultivation...On.a.global.basis,.there.has.been.a.steady.decrease.in.area.devoted.to.the.major.cereal.crops,.maize,.rice.and.wheat,.which.account.for.the.majority.of.calories.in.human.diets,.amounting.to.2.4.mil-lion.ha/year.(Mha).since.1980...Kampman.et.al.(2008).concur,.estimating.there.is.a.large.potential.of.idle.land,.especially.in.Russia,.Ukraine.and.Kazakhstan.where.over.the.last.15.years.almost.23.Mha.of.arable.land.became.idle.as.a.result.of.the.breakup.of.the.Soviet.Union..Also.in.the.United.States.(9.Mha).and.Europe,.idle.land.increased,.aimed.at.limiting.production.or.ensuring.more.sustainable.land.use.

Using.an.agro-ecological.zones.approach.on.the.other.hand,.Fischer.et.al.(2002)..found.that,.at.the.global.level,.the.Earth’s.land,.climate,.and.biological.resources.are.ample.to.meet.food,.pasture,.fodder.and.fibre.needs.of.future.generations,.in.particular,.for.a.world.population.of.9.3.billion,.as.projected.in.the.United.Nations.medium.variant.for.the.year.2050..Despite.this.positive.aggregate.global.picture.though,.they.discovered.reasons.for.profound.concern.in.several.regions.and.coun-tries.with.limited.land.and.water.resources..However,.Haugen.(2010).strongly.argues.that.these.estimates,.as.well.as.the.figures.produced.in.a.United.Nations.Food.and.Agriculture.Organization.(FAO).study.(FAO,.1995).cannot.be.considered.to.be.sufficiently.accurate.or.ecologically.justifiable.to.be.applied.as.a.basis.for.national.strategies.on.land.policies,.either.in.agriculture.or.forestry.

Smeets.et.al.(2007).estimated.that.between.730.Mha.up.to.3.6.Gha.of.agricultural.land.might.become.available.in.2050,.as.a.result.of.advancement.of.agricultural.technology.for.food.produc-tion,.representing.the.technical.potential.to.increase.the.efficiency.of.food.production..But.achiev-ing.the.high.side.of.this.range.would.require.a.very.drastic.change.of.global.agriculture,.including.for.example. landless.animal.production,.genetically.modified.organisms.and. implementation..of.the.best.available.technologies.as.well.as.very.high.levels.of.irrigation..In.addition,.there.is.uncertainty.about.future.impacts.of.climate.change.and.need.for.adaptation..

http://dx.doi.org/10.1021/es800052w

http://dx.doi.org/10.1023/A:1010055012699

http://dx.doi.org/10.1023/A:1010055012699

http://dx.doi.org/10.1016/j.pecs.2006.08.001



It.is.also.worth.noting.that.in.recent.years.there.already.are.increasing.claims.on.tropical.land.for.widespread.biofuels.plantations..In.a.review.by.FAO.and.the.International.Institute.for.Environ-ment.and.Development,.Cotula.et.al.(2009).report.that.GEM.Biofuels.plc.gained.exclusive.rights.for.50.years.over.453.Mha.in.Southern.Madagascar.to.plant.jatropha.for.biodiesel.production.whilst.UK.energy.company.CAMS.Group.have.acquired.a.lease.over.45.Mha.of.land.in.Tanzania.for.investments.in.sweet.sorghum.production.for.biofuels,.whether.these.are.”new”.or.exist-ing.agricultural.lands.is.far.from.clear,.nor.who.is.presently.occupying.them.or.what.ecosystem.services.they.provide...

replacing existing Crops with biofuels

If.biofuel.feedstock.production.becomes.profitable.for.farmers.they.may.switch.their.produc-tion.from.their.current.cropping.regime..This.potential.scenario.has.raised.international.concern.given.that.one.billion.people.are.still.food-insecure.(FAO.2009),.global.consumption.of.grains.and.oilseeds.has.exceeded.production.in.seven.out.of.the.first.eight.years.of.the.21st.century.and.the.global.stocks-to-use.ratio.has.reduced.from.30%.to.less.than.15%,.the.lowest.since.1970.(Trostle.2008)..

However,.the.impact.on.food.security.would.depend.on.the.crop.replaced..For.example,.coffee.is.grown.on.more.than.11.Mha.in.the.tropics,.often.by.smallholder.farmers.(Waller.et.al.2007),.coffee.at.the.lower.altitude.margins.will.be.replaced.as.climate.change.induced.temperature.rise.continues.and.some.of.this.could.be.turned.over.to.biofuels,.which.could.be.a.more.sustainable.alternative.than.beef.pasture..Nevertheless,.demand.for.coffee.remains.strong,.and.substitution.would.result.in.increasing.levels.of.deforestation.elsewhere,.especially.in.Southeast.Asia.(e.g..Vietnam,. Indonesia,.Laos),.which.means.that.direct.replacement.of.one.crop.by.another.still.causes.ILUC..

Cultivating Degraded, abandoned land or land That Is Considered marginal

It.has.been.claimed.that.some.biofuel.crops.can.be.grown.on.marginal.land,.under.low.rainfall.conditions,.otherwise.unsuitable.for.arable.production,.and.may.have.the.potential.to.improve.soil.properties..Two.examples.often.cited.of.this.potential.are.Pongamia pinnata, native.to.India,.and.Jatropha curcas, native.to.Central.America...Both.are.being.investigated.as.potential.biodiesel.feedstocks. .An.appealing.possibility.for.these.biofuels.feedstocks.is.that.as.hardy.species,.they.might.grow.extensively.on.marginal.or.degraded.land,.with.poor.soils,.low.rainfall.and.with.low.agronomic.inputs.yet.still.yield.enough.to.turn.a.profit.from.those.picking.it...

For.example,.much.of.the.interest.in.jatropha.stems.from.early.work.on.the.crop.in.Mali,.India.and.a.few.other.semi-arid.regions,.where.the.plant.is.common.and.habitually.used.for.hedges.to.protect.farm.plots.from.intrusion.by.wildlife.and.cattle.(Heller.1996;.Francis.et.al.2005)..However,.some.recent.reports.of.the.plant’s.ability.to.yield.well.in.such.conditions.are.disappointing.(Brit-taine.and.Lutaladio.2010)..It.appears.that.jatropha.will.survive.in.marginal.conditions,.but.data.are.lacking.to.prove.that.it.can.be.commercially.successful.under.such.conditions,.particularly.in.large-scale.plantations.(Sanderson.2009)..

In.reality,.jatropha.may.be.more.economically.and.environmentally.viable.in.small-scale,.com-munity-based.jatropha.plantations,.agroforestry.systems.with.jatropha.intercropping,.and.agro-silvo-pastoral.systems.(Achten.et.al.2010)..Rural.communities.relying.on.fuel.wood.and.expensive.fossil.fuel.as.energy.source.can.substitute.these.with.jatropha.oil,.which.is.easily.and.locally.extractable.with.cheap.technology.(Achten.et.al.2008)..The.use.of.jatropha.in.low.input.systems.for.small-scale.Jatropha.oil.production.offers.additional.advantages,.such.as.a.diversification.of.the.farmers’.income.sources,.the.reduction.of.soil.erosion,.the.use.of.woody.by-products.and.

http://dx.doi.org/doi:10.1111/j.1477-8947.2005.00109.x

http://dx.doi.org/doi:10.1038/461328a

http://dx.doi.org/10.1016/j.jaridenv.2009.08.010

http://dx.doi.org/10.1016/j.biombioe.2008.03.003



seed.cakes.as.combustible.or.soil.amendment.and.the.use.of.jatropha.hedges.as.living.fences.(Achten.et.al.2010)...

Other.feedstock.crops.suitable.for.bioethanol.production.that.can.be.grown.on.marginal.land.include.sweet.cassava.and.sweet.potato.(Ziska.et.al.2009.and.Ou.et.al.2010)..These.crops.are.grown.in.the.U.S..and.China.and.are.also.staple.foods.in.many.parts.of.the.tropics..However,.growing.root.crops.on.marginal.land.implies.substantial.soil.disturbance,.which.leads.to.greater.risk.of.soil.erosion.and.release.of.soil.carbon;.modern.zero.tillage.methods.are.preferable.but.not.applicable.in.the.case.of.root.crops..Otherwise,.perennial.crops.with.established.root.systems.and.low.soil.disturbance.may.be.more.appropriate.for.marginal.conditions.where.soils.will.often.be.poor.and.loose.

Intensifying land use without reducing Crop production

In.many.parts.of.the.world,.agricultural.systems.are.extensive.with.low.crop.densities,.no.external.inputs,.fallows.and.low.crop.yields.–.this.especially.is.the.case.for.poor.farmers..When.population.pressure.increases.and.market.access.improves,.these.drivers.motivate.people.to.change.their.production.systems.(Boserup.1965;.Binswanger.and.McIntire.1987),.particularly.when.pressure.is.so.high.that.there.is.no.available.uncultivated.area.to.expand.into.or.farmers.do.not.have.access.to.it.because.of.ownership.issues..Studies.have.shown.that.intensification.is.the.outcome.with.a.transition.to.greater.resource.use.and.higher.yields.(Demont.et.al.2007)..

Methods.include.using.innovations.such.as.animal.traction,.integration.of.crops.and.livestock,.improved.cropping.techniques,.and.use.of.external.inputs.(pesticides.and.fertilisers)..Other.tech-niques.not.reliant.on.purchased.inputs.include.live.mulch.systems,.i.e..rapidly.growing.herba-ceous.Leguminosae,.which.are.regularly.slashed,.and.grown.in.synchrony.with.the.crop..The.legumes.fix.nitrogen,.maintain.ground.cover,.control.weeds.and.increase.soil.phosphorus.avail-ability.(Lathwell.1990)..Examples.are.different.varieties.of.Mucuna pruriens.subsp..utilis, Pueraria phaseloides.and.Psophocarpus palustris...Systems.achieve.increased.nutrient.recycling.and.use-efficiency.through.N-fixation,.a.deep-reaching.root.system.and.by.producing.biomass.during.the.dry.season..When.such.legumes.are.incorporated,.fallow.lengths.can.be.reduced.so.yields.also.increase.over.time..In.some.cases,.intensification.has.led.to.improved.natural.resource.use.fertil-ity.(Tiffen.and.Mortimore.1994)..

Under.these.circumstances,.biofuel.production.could,.hypothetically,.make.complementary.use.of.land,.water.and.labour.resources,.increasing.overall.efficiency.(Ziska.et.al.2009)...For.example,.smallholder.farmers.could.grow.biofuel.crops.alongside.food.crops..This.could.increase.cash.flow,.thus.permitting.input.purchase,.agricultural.intensification.and.higher.yields..The.fuel,.if.locally.processed,.could.create.an.affordable.source.of.energy.to.semi-mechanize.crop.systems,.reduc-ing.labour.requirements.in.systems.where.labour.is.a.limiting.factor..

Thus.intercropping.biofuel.crops.with.food.crops.or.integrating.perennial.biofuels.into.existing.cultivation.systems.might.allow.the.development.of.fuel-food.systems.that.increase.resource.use.efficiency.through.spatial.or.temporal.integration,.but.data.on.this.are.lacking..Work.on.intercrop-ping.systems.can.exploit.a.greater.amount.of.limited.growth.factors.when.grown.together.than.when.apart,.particularly.if.components.have.different.architectures.and./.or.resource.demand.peaks.at.different.times.in.the.growing.season.(Midmore.1993)..Furthermore,.if.farmers.intercrop.a.biofuel.with.a.crop.where.they.commonly.apply.fertilizers,.or.use.land.fertilized.during.the.last.cycle,.the.biofuel.may.inadvertently.benefit.through.a.residual.fertilizer.effect.

Problems.lie.in.commercialization.and.this.includes.the.difficulty.of.assessing.quality.of.feed-stock. from.so.many.small. farms.as.well. as. the.collection.problem,.especially. for.bulky. raw.material.where.considerable.energy.has.to.be.expended.to.gather.enough.together.to.make.it.



http://dx.doi.org/10.1016/j.apenergy.2009.04.045

http://dx.doi.org/10.1086/451637

http://dx.doi.org/10.1016/j.agsy.2006.05.006

http://dx.doi.org/10.1016/0305-750X%2894%2990144-9


http://dx.doi.org/10.1016/0378-4290%2893%2990122-4



profitable.to.process..These.and.other.problems.(e.g..the.implied.shift.to.a.more.knowledge-intensive.production.mode).lie.in.the.path.of.intensification.for.most.smallholders..For.plantations.on.the.other.hand,.gains.in.productivity.can.be.expected..There.is.a.lack.of.data.that.quantify.this.gain,.so.further.data.collection.is.needed.to.assess.the.potential.impact.of.land.intensification.on.food.crop.vs..biofuel.feedstock.crop.production.

Potentially.the.most.likely.biofuel.feedstock.for.a.low.input.system.could.be.those.derived.from.low-input.high-diversity.(LIHD).mixtures.of.native.grassland.perennials...According.to.Til-man.et.al.(2006).such.a.system.can.provide.more.usable.energy,.greater.GHG.reductions,.and.less.agrichemical.pollution.per.hectare.than.can.maize.grain.ethanol.or.soybean.biodiesel..They.found.that.high-diversity.grasslands.developed.increasingly.higher.bioenergy.yields.that.were.238%.greater.than.monoculture.yields.after.a.decade..Moreover,.LIHD.biofuels.can.be.produced.on.agriculturally.degraded.lands.and.thus.need.to.neither.displace.food.production.nor.cause.loss.of.biodiversity.via.habitat.destruction...An.important.caveat.here.is.to.determine.and.define.the.nature.of.degraded.lands,.since.many.lands.of.this.type.are.still.a.wildlife.refuge.and.in.developing.countries,.used.by.nomadic.pastoralists,.for.example.

In.temperate.areas,.high. input.agriculture. is.the.norm.using. inorganic.fertilizer,.pesticides,.mechanisation.and.thus.energy..Comprehensive.statistics.on.comparative.yields.by.crop.are.avail-able.from.FAO..Bondeau.et.al.(2007).assessed.FAO.data.on.country.average.maize.grain.yields,.divided.by.climatic.zone..They.found.that.yields.were.highest.in.warm.temperate.areas,.depend-ing.on.input.level,.ranging.from.3.5.Mg.ha-1.in.Turkey.to.approximately.9.Mg.ha-1.in.Greece...For.cool.temperate.areas,.yields.presented.were.from.4.Mg.ha-1.in.China.to.more.than.7.5.Mg.ha-1.in.Switzerland..Yields.in.tropical.areas.varied.from.0.75.Mg.ha-1.in.the.Democratic.Republic.of.Congo.to.2.5.Mg.ha-1.in.Thailand.

Notably,.yields.and.requirements.for.biofuel.crops.vary.widely.over.different.production.sys-tems.and.regions..But.mere.data.about.yields.is.of.little.use.when.considering.biofuels,.what.we.now.need.to.know.is.the.maximal.yield.per.unit.of.GHG.produced..A.recent.paper.by.Melillo.et.al.(2009).indicates.that.nitrous.oxide.release.from.fertilizer.use.is.the.most.serious.problem.of.GHG.balance..Data.are.lacking.on.rates.of.release,.number.of.applications,.formulation.and.other.factors.and.hence.experiments.will.need.to.be.carried.out.to.assess.optimal.applications...Moreover,.Johnston.et.al.(2009).questioned.the.data.frequently.presented.in.biofuels.journals.and.decided.to.compare.this.data.with.their.own.calculations,.based.on.the.best.available.global.agricultural.census.data..They.found.that.biofuel.yield.data.are.often.taken.from.a.single.location,.sometimes.a.yield.trial.and.are.frequently.overestimated.by.100%.or.more..They.conclude.that.”a.more.detailed,.geographically-specific.analysis.of.(actual.and.potential).yields.is.necessary.”..

The.difficulties.of.accurately.estimating.yields.are. further.exacerbated.by. the. likely. future.changes.due.to.climate.change..In.tropical.regions.especially,.many.crop.yields.are.expected.to.decline.due.to.increased.temperature,.increased.pests.and.disease,.more.chaotic.rainfall.and.even.sea.level.rise.(Contribution.of.Working.Group.II.to.the.Fourth.Assessment.Report.of.the.IPCC,.2007)..Indeed,.some.evidence.already.exists.that.yields.have.been.negatively.affected.by.increased.temperatures..Lobell.and.Field.(2007).estimate.that.warming.since.1981.has.resulted.in.annual.combined.losses.in.wheat,.maize.and.barley.crops.representing.roughly.40.million.tons.(Mt).or.$5.billion.per.year.by.2002...A.model.developed.by.Schlenker.and.Roberts.(2009).without.ILUC.effects.suggests.that.area-weighted.average.yields.of.soy.and.maize.will.decrease.by.30–46%.before.the.end.of.the.century.under.the.slowest.(B1).IPCC.warming.scenario.and.decrease.by.63–82%.under.the.most.rapid.warming.scenario.(A1FI,..under.the.Hadley.III.model).

More.generally,.a.recent.report.estimates.that.in.developing.countries,.climate.change.will.cause.yield.declines.for.the.most.important.crops..South.Asia.will.be.particularly.hard.hit...Climate.change.will.have.varying.effects.on.irrigated.yields.across.regions,.but.irrigated.yields.for.all.crops.in.South.Asia.will.experience.large.declines.(Nelson.2009)...Climate.change.will.therefore.cause.



http://dx.doi.org/10.1111/j.1365-2486.2006.01305.x



http://dx.doi.org/10.1088/1748-9326/2/1/014002

http://dx.doi.org/10.1073/pnas.0906865106



its.own.ILUC.and.how.this.would.relate.to.biofuel.ILUC.is.difficult.to.imagine.and.is.something.that.is,.as.far.as.we.have.been.able.to.ascertain,.unresearched.

Two.very.recent.papers.highlight.the.potential.and.the.reality:.on.the.one.hand.Burney.et.al.(2010).estimate.that.each.dollar.invested.in.agricultural.yields.has.resulted.in.68.fewer.kgC.(249.kgCO2e).emissions.relative.to.1961.technology.($14.74/tC,.or.$4/tCO2e),.avoiding.3.6.GtC.(13.1.GtCO2e).per.year..Their.analysis.indicates.that.investment.in.yield.improvements.compares.fa-vourably.with.other.commonly.proposed.mitigation.strategies.and.recommend.that.further.yield.improvements.should.be.prominent.among.efforts.to.reduce.future.GHG.emissions..

On.the.other.hand.Gibbs.et.al.(2010).analyze.FAO’s.pan-tropical.Landsat.database.to.exam-ine.pathways.of.agricultural.expansion.across.the.major.tropical.forest.regions.in.the.1980s.and.1990s..Over.that.period,.across.the.tropics,.they.find.that.more.than.55%of.new.agricultural.land.came.at.the.expense.of.intact.forests,.and.another.28%.came.from.disturbed.forests..It.is.therefore.highly.likely.that.considerable.GHG.savings.could.be.made.by.judicious.investment.in.research.and.implementation,.but.equally.likely.that.this.may.not.happen.in.many.places.

Conclusion

There.are.multiple.uncertainties.with.biofuel.land.use,.both.direct.and.indirect..There.are.major.doubts.about.official.estimates.of.available.land,.including.those.classed.as.unused,.abandoned,.degraded.and.marginal..Current.estimates.of.the.land.that.might.be.pressed.into.service.in.the.next.40.years.vary.widely,.by.half.an.order.of.magnitude.and.more..Until.these.discrepancies.are.resolved,.the.various.attempts.to.calculate.and.model.what.will.happen.as.biofuel.production.expands.should.be.regarded.as.extremely.tentative,.otherwise.such.estimates.run.the.risk.of.becoming.accepted.as.the.truth.by.policy.makers..In.such.a.case.as.this,.perhaps.the.lower.range.of.estimates.of.available.land.should.be.adopted.until.more.convincing.data.is.available..

At.the.same.time.it.seems.possible.that.there.would.be.substantial.habitat.destruction,.espe-cially.tropical.rainforest.and.savannah..Leading.environmental.scientists.and.international.organi-zations.such.as.UNEP.all.agree.that.further.destruction.of.these.systems.is.a.major.risk.for.climate.change,.biodiversity.and.ecosystem.services...These.issues.will.be.covered.further.in.Section.5...Substantial.yield.increase.of.existing.agricultural.lands.is.clearly.desirable,.but.in.many.cases.is.by.no.means.a.foregone.conclusion.because.of.the.various.economic,.cultural.and.infrastructure.difficulties.that.lie.in.the.way.of.scaling.up.such.an.outcome,.especially.with.resource-poor.farm-ers.in.developing.countries..On.top.of.this.are.the.uncertainties.of.our.future.climate,.where.more.extremes.(high.temperatures,.droughts,.floods).are.predicted.

3. bIofuels feeDsToCK lCas, energy balanCe anD Carbon fooTprInT: HoW IT relaTes To IluC

biofuels lCas

A.recent.review.by.van.der.Voet.et.al.(2010).of.no.less.than.67.biofuel.LCAs.found.a.range.of.problems..The.studies.do.not.adopt.the.same.functional.units;.some.express.results.in.terms.of.amount.of.energy.contained.in.the.fuel,.others.the.weight.of.the.fuel.or.the.yield.per.unit.area.(e.g..hectare).or.even.a.composite.measure..Such.differences.make.comparison.between.stud-ies.difficult.and.lead.to.major.differences.in.conclusions...Different.allocation.methods.employed.in.the.studies.caused.percentage.GHG.reductions.compared.to.fossil.fuels.to.vary.from.negative.to.above.100%.



http://dx.doi.org/10.1073%2Fpnas.0910275107



The.authors.also.found.that.the.system.boundaries.vary.between.studies,.reflecting.their.dif-ferent.purposes..Hence.some.are.well-to-wheel,.others.are.well-to-tank,.cradle-to-gate.(where.‘gate’.means.the.final.product.less.costs.of.delivery.to.the.tank).and.even.cradle-to-grave.where.the.whole.transport.system.is.evaluated,.including.the.car.and.the.road..The.latter.is.the.most.complete.and.indeed.is.surely.needed.if.society.is.to.evaluate.the.full.costs.of.our.current.free-wheeling.life.styles..But.by.so.doing,.these.most.comprehensive.studies.tend.to.reduce.the.overall.differences.between.fuel.stocks,.which.is.often.the.centre.of.interest.

At.the.heart.of.this.is.a.fundamental.problem:.LCAs.were.never.designed.to.cover.wide-ranging.questions.of.such.global.concern..LCAs.are,.by.concept,.a.way.of.determining.costs.and.impacts.of.a.particular.process.–.they.are.especially.useful.for.firms.looking.to.reduce.costs.of.energy.and.materials.for.a.particular.supply.chain,.or.of.reducing.environmental.pollution;.Coca-Cola.and.Mobil.Oil.were.early.adopters..It.is.easy.for.a.company.to.use.LCAs,.because.they.can.be.reduced.to.a.bottom.line.expressed.in.terms.of.money.saved..

As.Finnveden.et.al.(2009).point.out,.not.all.types.of.impacts.are.equally.well.covered.in.a.typi-cal.LCA..For.example,.the.methods.for.the.impact.assessment.of.land.use,.including.impacts.on.biodiversity,.and.resource.aspects,.including.freshwater.resources,.are.problematic.and.need.to.be.improved..They.also.believe.that.there.is.a.growing.realization.of.the.need.to.match.the.aims.of.the.study,.the.questions.being.asked.and.the.choices.made..For.example,.if.the.aim.of.a.study.is.to.assess.the.consequences.of.a.choice,.the.data.used.and.the.system.boundaries.chosen.should.reflect.these.consequences..The.data.and.system.boundaries.used.can.then.be.discussed.and.assessed.in.relation.to.their.appropriateness.for.this.specific.aim.

In.the.simplest.analysis,.biofuels.are.considered.to.be.carbon.neutral.because.CO2.released.during.biofuel.combustion.is.offset.by.carbon.fixation.during.plant.growth..However,.GHGs.can.be.produced.during.production.and.carbon.balance.can.only.be.determined.by.a.LCA.(Koh.and.Ghazoul.2008)..LCAs.follow.the.impact.of.a.product.on.the.environment.throughout.its.life.span,.through.extraction.of.raw.materials,.conversion,.manufacture,.transport.and.use,.to.disposal.of.the.product.at.the.end.of.its.useful.life.and.management.of.the.waste.(Berg.1997)..Using.this.approach,.land,.water,.carbon.footprints.and.energy.balances.can.be.calculated.

Another.method.to.evaluate.the.effects.of.LUC.(DLUC.and.ILUC).developed.by.García-Quijano.et.al.(2007).uses.17.quantitative.indicators.to.describe.impacts.on.water,.soil,.vegetation.cover.and.biodiversity..This.method.calculates.impact.of.LUC.and.occupation.relative.to.the.potential.natural.vegetation.of.a.certain. location..Ecological. impacts.are.evaluated.specifically. for.soil,.biomass,.vegetation.structure.and.water.per.functional.unit..By.expressing.the.impacts.in.a.rela-tive.way.(generally.by.percentage),.the.land.use.impacts.become.site-independent.and.globally.applicable.and.comparable..The.application.of.different.versions.of.this.methodology.in.different.environments.and.on.different.production.systems.have.proven.to.result.in.understandable.and.realistic.outcomes.

Nevertheless,.the.LCA.process.is.by.no.means.straightforward..Gnansounou.et.al.(2008).for.example,.found.significant.biases.stemming.from.a.range.of.factors..They.found.that.the.esti-mated.GHG.balance.of.wheat-based.ethanol.was.highly.sensitive.to.the.method.used.to.allocate.impacts.between.co-products,. type.of.reference.system,.type.of. land-use.change,.choice.of.functional.unit.and.type.of.fuel.blend..Depending.on.the.methodological.choices.made,.variation.of.life-cycle.GHG.emissions.with.respect.to.gasoline.ranged.from.-107%.to.+120%..They.con-clude.that.several.LCA.studies.are.not.transparent.enough.and.methodological.choices.can.easily.turn.a.positive.GHG.balance.into.a.negative.one..It.is.therefore.very.important.to.establish.agreed.evaluation.methods.

Cherubini.(2010).has.just.reviewed.a.wide.range.of.methodological.concerns.and.identifies.several.areas.that.lead.to.diverging.results..These.include.type.of.biomass.source,.conversion.

http://dx.doi.org/10.1016/j.jenvman.2009.06.018

http://dx.doi.org/10.1016/j.biocon.2008.08.005


http://dx.doi.org/10.1016/S0959-6526(97)00040-1

http://dx.doi.org/10.1007/s10584-006-9204-5

http://dx.doi.org/10.1007/s10584-006-9204-5

http://dx.doi.org/10.1016/j.renene.2009.11.035



technologies,.input.data,.end-use.technologies,.allocation.method,.system.boundaries,.reference.energy.system.and.other.assumptions.such.as.land-use.change.effects,.soil.N2O.emissions,.data.quality.and.age..He.lists.18.guidelines.and.recommendations.which.are.too.numerous.to.detail.here,.so.we.mention.just.one..

When.agricultural.residues.are.used.as.raw.materials.for.energy.generation.(e.g..in.the.case.of.sugar.cane),.best.management.practices.and.above-ground.residue.harvest.rates.need.to.be.established.for.minimum.amount.of.crop.residue.that.must.be.retained.on.the.soil.to.maintain.soil.organic.carbon,.minimizing.erosion.and.protecting.soil.quality.and.productivity..He.suggests.that.this.very.complex.issue.(which.is.ignored.in.some.studies).should.be.addressed.regionally.if.not.on.a.field.or.even.subfield.basis..Rotation,.tillage.and.fertilization.management,.soil.properties.and.climate.will.all.play.major.roles.in.determining.the.amount.of.crop.residue.that.can.be.removed.in.a.sustainable.system..

energy balance

A.cardinal.requirement.of.any.energy.generation.business.is.that.it.should.generate.more.energy.than.is.consumed.by.the.generation.process..This.balance.is.called.the.Energy.Return.On.Invest-ment.(EROI).and.has.been.the.subject.of.much.recent.debate.and.confusion..With.fossil.fuels.it.was.never.an.issue.since,.as.Solomon.(2010).points.out,.in.the.1930s,.the.US.production.ratio.was.about.100:1..Latterly.though.the.ratio.has.fallen.to.at.best.20:1.Hall.et.al.(2009);.and.the.ratios.calculated.for.biofuels.are.always.lower.than.this..

A.review.of.10.papers.on.corn.and.cellulosic.energetics.by.Hammerschlag.(2006).concluded.that.for.cellulosic.ethanol.EROI,.three.of.four.studies.estimated.the.range.as.4.4:1.to.6.6:1,.whilst.Farrell.et.al.(2006).reported.values.as.high.as.11:1..For.existing.corn.based.ethanol.operations.on.the.other.hand,.EROI.ranged.from.1.3:1.to.1.65:1.in.five.of.six.studies,.with.Pimentel.and.Patzek’s.(2005).estimations.being.an.exception,.showing.negative.gain.of.0.7:1...Pimentel.and.Patzek’s.estimates.did.not..account.for.the.use.of.co-products..

This.highlights.a.significant.issue.raised.in.detail.by.Giampietro.and.Mayumi.(2009):.there.is.no.standard.way.to.calculate.EROI..It.depends.on.a.range.of.indirect.factors.and.hence.has.parallels.to.the.ILUC.problem..For.instance,.for.a.simple.system.such.as.a.smallholder.farmer.growing.a.biofuel.crop,.what.counts.towards.energy.inputs?.Is.it.just.the.farmer’s.direct.energy.inputs.to.produce.the.crop?.Or.does.it.include.his/her.family’s.energy.costs,.since.the.family.is.the.over-head.that.ensures.a.sustainable.farming.future?.And.what.about.the.sunken.fossil.fuel.energy.costs.in.the.equipment.he.uses,.and.how.much.more.energy.expensive.will.they.be.in.a.future.when.they.too.have.to.be.produced.by.burning.biofuels?.Hall.et.al.(2009).state.that.since.most.biofuels.have.EROI’s.of.less.than.3:1.they.must.be.subsidized.by.fossil.fuels.to.be.useful.

Additionally,.Giampietro.and.Mayumi.point.out.that.the.conventional.analysis.of.EROI.misses.out.the.implications.of.the.power.level.of.the.system..Differences.in.scale.imply.completely.dif-ferent.sets.of.internal.and.external.constraints..What.is.clear,.is.that.with.the.very.high.historical.gains.of.fossil.fuel.energy.production,.human.society.has.never.needed.to.seriously.consider.EROI;.now.however,.with.the.much.lower.energy.gains.of.biofuel.systems,.the.way.we.evaluate.a.system’s.energy.gain.needs.very.careful.consideration..

Carbon footprint

There.are.significant.differences.between.biofuel.crops.in.their.GHG.balances..Figure.2.demon-strates.the.wide.estimated.ranges.from.the.available.data.(Menichetti.and.Otto.2009)..Palm.oil.is.not.included.because.its.full.range.includes.a.value.of.-868%.for.GHG.savings.when.grown.on.

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http://dx.doi.org/10.1007/s11053-005-4679-8

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peat..Overall,.sugar.cane.and.sunflower.display.the.most.favourable.balances,.though.all.these.must.be.regarded.as.tentative,.given.the.almost.universal.tendency.to.over-estimate.yields.as.mentioned.above..

figure 2: ranges of estimated fossil fuel and gHg savings for maize (ma), soybean (so), wheat (Wh), sugarbeet (sb), sugar cane (sc), rape seed (rs) and sunflower (sf). % fossil fuel savings refers to the reduction in fossil fuel use that would be achieved by adopting the biofuel in question. The ideal biofuel would be a short line located in the top right of the graph. Data from menichetti and otto (2009).

Globally,.most.of.the.discussion.of.biofuels.LUC.has.focussed.on.impacts.on.carbon.cycling.or.carbon.footprint..Koh.and.Ghazoul.(2008).analysed.studies.conducted.during.the.last.15.years..They.demonstrated.that.the.replacement.of.petrol.or.diesel.by.biofuels.can.reduce.GHG.emis-sions.by.31%.for.bioethanol,.54%.for.biodiesel,.and.71%.for.cellulosic.ethanol..Sugarcane.bio-ethanol.had.the.greatest.GHG.savings,.and.this.has.been.reflected.in.analyses.conducted.in.the.U.S..for.the.federal.Renewable.Fuels.Standard.program.(RFS2)..

According.to.the.Intergovernmental.Panel.on.Climate.Change.(2000),.LUC.generally.(primarily.deforestation).was.responsible.for.20%.of.global.CO2.release.from.1989.to.1998..If.remaining.forested.lands.are.also.converted.to.biofuels,.carbon.dioxide.emissions.will.increase..Recently.Gibbs.et.al.(2010).provide.new.evidence.that.expansion.of.farming.is.a.major.cause.of.forest.loss.

In.many.cases,.conversion.will. result. in.significant.above-.and.belowground.carbon.losses.(Figure.3),.creating.carbon.payback.times.of.decades.or.even.centuries.(Fargione.et.al.2008)..However,.this.is.mainly.dependent.on.the.carbon.stocks.of.the.previous.land.use,.plus.the.land.management.patterns.post.conversion,.rather.than.the.biofuel.crop.per se..

Yet,.these.analyses.use.general.figures.that.need.to.be.put.into.context..While.it.is.relatively.easy.to.estimate.changes.in.above-ground.carbon.stock,.as.these.are.proportional.to.biomass,.carbon.changes.in.soils.are.more.complex..The.carbon.balances.of.terrestrial.ecosystems.are.uncertain.and.there.are.errors.in.measurements,.but.perhaps.most.importantly.due.to.method-ological.problems.resulting.in.incomplete.accounting.(Houghton.2003)..There.is.a.lack.of.data.on.carbon.dynamics,.particularly.in.tropical.systems,.from.where.the.greater.part.of.carbon.emis-sions.is.expected...




http://dx.doi.org/10.1034/j.1600-0889.2003.01450.x



There.is.also.much.uncertainty.regarding.the.various.sinks.of.CO2.in.natural.ecosystems..Bon-deau.et.al.(2007).summarise.ranges.in.estimated.agriculture.related.carbon.fluxes.listed.in.recent.papers..Estimates.varied.over.an.enormous.range,.from.0.6.to.3.0.megatonnes.C.yr-1,.(Schimel.et.al.2001,.House.et.al.2003)..This.huge.uncertainty.reflects.large.differences.in.estimates.of.deforestation.rates.and.in.the.size.of.the.terrestrial.carbon.sink.

Generally. it. is. assumed. that. converting.native. systems. to. cultivation. reduces.soil. carbon.through.increased.soil.respiration.and.loss.of.soil.organic.carbon.(SOC)..In.North.America,.for.example,.there.were.large.decreases.in.soil.carbon.when.prairies.were.ploughed.for.the.first.time.in.the.latter.part.of.the.19th.Century.(Tiessen.and.Stewart.1983),.estimated.by.Wilson.(1978).to.have.been.3.7.Pg.carbon.p.a..between.1860.and.1890..Nevertheless.there.are.many.manage-ment.factors.affecting.this.dynamic..These.include.nitrogen.status,.tillage,.and.the.crop.selected...

For.example,.it.is.suggested.that.nitrogen.fertilization.can.increase.carbon.mineralization.of.recalcitrant.soil.carbon.pools.(Dijkstra.et.al.2005).by.inducing.changes.in.the.activity.of.ligninase.enzymes.(Zech.et.al.1994,.Dijkstra.et.al.2004)..In.this.case,.carbon.storage.in.soils.would.be.greater.in.the.long.run.under.N-amended.agricultural.soils.than.under.native.vegetation..Yet,.this.hypothesis.has.been.challenged.by.Cadisch.and.Giller.(2001).who.found.evidence.against.a.direct.lignin.pathway.to.soil.organic.matter.(SOM).formation:.a.fertilization.experiment.they.performed.found.that.only.the.labile.fractions.of.soil.carbon.increased.rather.than.the.recalcitrant.fractions.

Additionally,.Melillo.et.al.(2009).using.linked.economic.and.terrestrial.biogeochemistry.models,.predict.that.in.a.global.cellulosic.bioenergy.program,.ILUC.will.be.responsible.for.substantially.more.carbon.loss.(up.to.twice.as.much).than.direct.land.use;.finding.that.through.predicted.in-creases.in.fertilizer.use,.nitrous.oxide.emissions.will.eventually.be.more.important.than.carbon.losses.themselves.in.terms.of.warming.potential..Their.analysis,.the.most.comprehensive.to.date,.therefore.shows.that.DLUC.and.ILUC.associated.with.expanding.global.biofuels.programs.have.the.potential.to.release.large.quantities.of.GHGs.into.the.atmosphere.

Melillo.and.his.colleagues.simulated.two.global.land-use.scenarios.in.their.study..In.Case.1,.natural.areas.are.converted.to.meet.increased.demand.for.biofuels.production.land..In.Case.2,.there.is.less.willingness.to.convert.land.and.existing.managed.land.is.used.more.intensely..The.model.predicts.that,.in.both.scenarios,.land.devoted.to.biofuels.will.become.greater.than.the.total.area.currently.devoted.to.crops.by.the.end.of.the.21st.century..Case.1.will.result.in.more.carbon.loss.than.Case.2,.especially.at.mid-century..In.addition,.indirect.land.use.will.be.responsible.for.substantially.greater.carbon.losses.(up.to.twice.as.much).than.direct.land.use.

Balesdent.et.al.(2000).compiled.a.review.on.the.effects.of.tillage.on.soil.carbon.dynamics..They.

figure 3: above and below-ground carbon (C expressed in megagrams = tonnes) debts created in land use conver-sion to selected biofuel crops (norgrove 2010, adapted after fargione et al 2008).

http://dx.doi.org/10.1111/j.1365-2486.2006.01305.x

http://dx.doi.org/10.1111/j.1365-2486.2006.01305.x

http://dx.doi.org/10.1038/35102500

http://dx.doi.org/10.1038/35102500

http://dx.doi.org/10.1034/j.1600-0889.2003.00037.x

http://dx.doi.org/10.2136/sssaj1983.03615995004700030023x

http://dx.doi.org/10.1038/273040a0

http://dx.doi.org/10.1007/s11104-004-3848-6

http://dx.doi.org/10.1016/0048-9697%2894%2990550-9



http://dx.doi.org/10.1016/S0167-1987(99)00107-5




concluded.that.no.general.relationships.could.be.discerned.as.tillage.effects.interact.strongly.with.local.climate,.soil.physical.properties,.and.microbial.populations..Tillage.disrupts.soil.structure.by.breaking.macroaggregates..Microaggregates.are.dispersed.and.this.alters.SOM.decomposition.but.the.extent.of.change.depends.on.the.previous.land.use.and.the.time.lag.since.conversion..To.predict.better.the.consequences.of.tillage.on.SOM.turnover,.more.quantitative.studies.are.needed.

Solomon.et.al.(2002),.working.in.the.humid.zone.of.Southeast.Ethiopia.reported.that.topsoil.SOC.reduced.from.58-63.Mg.ha-1.under.humid.forest.to.34-40.Mg.ha-1.in.maize.fields..Tchienkoua.and.Zech.(2004).looked.at.SOC.under.intercropped.food.crop.systems.and.compared.this.with.areas.that.had.been.converted.to.Eucalyptus and.tea.plantations..Conversion.led.to.significant.increases.in.SOC.(by.a.factor.of.approximately.2.for.both.trajectories)..Tchienkoua.and.Zech.(2004).stated.that.this.was.favoured.by.low.temperature.fluctuations.and.by.allophone,.a.substance.that.reduces.decomposition.rate.of.polysaccharides.and.glucose..Other.authors.have.found.increases.in.SOC.when.rainforest.is.converted.to.improved.pasture..For.example,.Boddey.et.al.(2002).report.that.SOC.under.improved.pasture.of.Brachiaria.in.South.America.increased.compared.with.the.previous.rainforest...Such.mechanisms.involve.the.deposition.of.recalcitrant.root.residues.high.in.lignin.and.tannin.at.deeper.soil.layers.due.to.root.turnover.by.deep.rooting.grasses..

There.are.many.methodological.problems.associated.with.the.measurement.of.soil.carbon..For.example,.to.obtain.an.accurate.estimate.of.soil.carbon.in.Mg.ha-1,.it.is.necessary.to.simultaneously.analyse.soil.carbon.concentrations.and.soil.bulk.density.to.a.depth.where.the.total.carbon.con-tribution.of.that.depth.fraction.to.total.soil.is.insignificant...Yet,.often.soil.bulk.density.estimates.are.not.done,.they.are.inherently.difficult.to.do.on.ploughed.soil,.and.methods.used.vary.(core.method.versus.clod.method)..Below.20cm,.bulk.density.measures.are.increasingly.destructive...Many.authors.have.only.estimated.soil.bulk.density.in.the.topsoil.although.bulk.density.at.deeper.layers.is.difficult.to.predict.from.this.parameter.

Second,.different.authors.have.used.different.extraction.techniques.for.soil.carbon..For.ex-ample,.the.use.of.the.Heanes.(1984).method.will.give.different.results.to.the.Walkley.and.Black.method.(Walkley.and.Black.1934)..Furthermore,.the.temperature.used.in.the.Walkley.and.Black.extraction.affects.the.results.with.greater.carbon.extracted.at.higher.temperatures..Method.stan-dardization.is.therefore.essential..Regarding.measurements.of.carbon.fluxes,.the.least.labour.intensive.and.most.capital.intensive.measurement.of.soil.respiration.is.by.using.an.infrared.gas.analyzer..

Nonetheless,.this.gives.only.a.spot.value.and.requires.simultaneous.measurement.of.soil.tem-perature.and.water.content..As.respiration.rate.will.vary.greatly.diurnally,.repeated.measures.over.a.representative.24-hour.period.are.required..Other.methods.include.the.use.of.soda.lime,.left.in.an.enclosed.container.over.a.fixed.area.of.soil.for.24.hours.and.weighed.before.and.after.to.deter-mine.carbon.uptake..This.gives.an.integral.measure.of.soil.respiration.and.making.measurements.at.different.times.of.year.allows.an.estimation.of.yearly.fluxes..This.method.requires.numerous.titrations.or,.if.solid.soda.lime.is.used,.precise.weighing.of.the.material.before.and.after....

Conclusion

The.uncertainties.associated.with.ILUC.are.compounded.by.methodological.problems.with.the.LCA.process.itself..The.issues.are.multiple.and.complex.and.would.require.a.separate.study.to.cover.adequately..As.things.stand,.it.would.seem.that.little.confidence.can.be.placed.in.any.one.LCA.study.unless.every.assumption.is.transparently.listed.and.sufficient.emphasis.is.placed.on.any.remaining.uncertainties..At.the.root.of.this.problem.is.that.current.commercial.biofuels.have.much.lower.EROI.ratios.than.fossil.fuels,.so.that.there.is.little.or.no.safety.factor.to.allow.for,.say,.local.differences.in.yields.or.energy.costs.of.irrigation.for.example..Much.clearer.guidelines.are.

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needed.for.field.operators.and.the.implications.for.standard-setting.are.possibly.very.onerous..Furthermore,.it.would.seem.that.the.energy.expended.in.ILUC.activities.are.currently.not.factored.into.EROI.calculations,.which.could.further.add.to.the.doubts.surrounding.the.true.sustainable.energy.gains.accrued.through.biofuels.to.society....

4. aDDITIonal envIronmenTal ImpaCTs lInKeD To IluCAdditional.environmental.impacts.that.have.been.linked.to.ILUC.include.biodiversity.and.water.footprint..This.section.briefly.details.these.concerns.and.their.link.to.biofuels.ILUC.

biodiversity Concerns

Attempts.to.halt.biodiversity.decline.by.2010.as.stated.in.the.Convention.on.Biodiversity.are.now.widely.agreed.to.have.failed..It.is.also.generally.acknowledged.that.further.losses.of.natural.habitats.is.extremely.ill-advised,.because.of.risk.of.extinction.and.the.loss.of.ecosystem.services.that.this.will.entail...Forest.losses.in.Southeast.Asia.for.example.have.accelerated.in.recent.years..Koh.(2007).points.out.that.the.rate.of.loss.of.old.growth.forests.in.Indonesia.has.increased.from.2.3%.per.year.in.the.period.1990–2000.to.2.7%.per.year.in.2000–2005..Old.growth.forests.are.also.being.lost.at.increasing.rates.in.Cambodia.(1.0.to.6.7%).and.Vietnam.(6.9.to14.6%).between.the.two.time.periods..Much.of.the.forest.loss.is.due.to.expansion.of.agricultural.land.(Gibbs.et.al.2010),.for.commodity.crops.including.biofuels.feedstocks...This.will.either.directly.or.indirectly.only.tend.to.further.increase.natural.habitat.loss.

A.study.on.biodiversity.in.oil.palm.plantations.(Fitzherbert.et.al.2008).concludes.that.they.are.a.poor.substitute.for.native.tropical.forests.and.support.few.species.of.conservation.importance,.and.affect.biodiversity.in.adjacent.habitats.through.fragmentation,.edge.effects.and.pollution..The.authors.suggest.that.there.is.enough.non-forested.land.suitable.for.plantation.development.to.allow.large.increases.in.production.without.further.deforestation,.but.political.inertia,.competing.priorities.and.lack.of.capacity.and.understanding,.not.to.mention.high.levels.of.demand.for.timber.and.palm.oil,.often.make.it.attractive.to.clear.forests..

Moreover,.some.biofuel.plant.species.may.become.invasive.in.non-native.ecosystems.and.hence,.affect.biodiversity.and.ecosystem.services..For.example,.jatropha.is.considered.as.an.invasive.weed.in.South.Africa.and.Australia.although.studies.on.its.actual.or.potential.ecological.impact.are.as.yet.unavailable..A.further.and.serious.problem.with.greatly.expanding.biofuel.pro-duction.is.that.optimal.yields.and.efficiencies.are.gained.with.large.monocropped.systems..As.with.all.monocultures,.such.large.expanses.are.inherently.susceptible.to.attack.by.pests..History.is.full.of.grandiose.schemes.for.major.production.schemes.that.have.faltered.or.been.serious.curbed.by.these.factors.(e.g..Grandin.2009)..

Pests.frequently.account.for.40+%.crop.losses.(Oerke.and.Dehne.1997).and.biofuel.crops.are.no.different.but.so.far.little.studied...We.know.though.that.pests.can.cause.major.losses.to.crops.that.can.be.used.as.biofuels..For.example,.basal.stem.rot.(BSR).is.the.most.serious.constraint.of.oil.palm.in.South.East.Asia...After.10.or.more.years,.yields.may.be.reduced.by.25%.or.more.(Ariffin.et.al.2000).but.importantly,.the.disease.appears.earlier.in.replanted.areas..Therefore.suc-cessful.management.of.BSR.is.essential.to.allow.replanting.on.currently.cultivated.land.and.to.reduce.further.deforestation..

Theoretically.at.least,.cellulosic.biofuels.based.on.a.mix.of.grass.species.might.experience.fewer.pest.and.disease.losses.since.this.could.provide.a.stable.combination.of.species.likely.to.possess.a.relatively.high.level.of.overall.genetic.resistance.with,.if.managed.effectively,.a.reason-able.balance.of.pests.and.natural.enemies..Currently.though,.this.subject.seems.to.be.completely.

http://dx.doi.org/10.1007/s10531-007-9177-3



http://dx.doi.org/10.1016/j.tree.2008.06.012

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unstudied...Theoretically.too,.biofuel.plants.introduced.to.non-indigenous.areas.may.be.preferred.because.they.would.be.considered.likely.to.be.attacked.by.a.smaller.guild.of.pests.and.diseases.but.there.is.always.a.risk.of.pests.and.diseases.from.closely.related.crops.spreading.to.the.intro-duced.crop..Also.there.are.potential.problems.with.invasiveness.–.the.ideal.biofuel.plant.would.be.one.that.grows.vigorously.in.marginal.conditions.and.this.is.precisely.the.characteristic.of.many.invasive.plant.species..Invasives.have.the.potential.to.cause.significant.economic.loss:.In.the.US.alone,.annual.losses.of.over.$120.billion.have.been.documented.from.the.effects.and.control.of.introductions.of.invasive.species.

potential Impacts on Water resources

Currently.food.and.fibre.production.systems.use.86%.of.worldwide.freshwater.(Hoekstra.and.Chapagain.2007)..Table.2.details.water.footprints.for.some.common.biofuels..Sugarbeet,.maize,.sugar.cane.and.potato.bioethanol.have.low.water.footprints..The.biodiesel.crops,.soy.and.rape.have.very.high.water.footprints..Some.of.these.values.(for.example,.for.jatropha).have.been.dis-puted.by.others.however.(Pfister.and.Hellweg.2009).

Crop Total water footprint(m3 per GJ electricity)

Sugar beet 46Maize 50

Sugar cane 50Barley 70Rye 77

Paddy rice 85Wheat 93Potato 105

Cassava 148Soybean 173Sorghum 180Rapeseed 383Jatropha 396

Table 2: Total weighted global average water footprint for 13 crops (from gerbens-leenes et al 2009).

The.International.Water.Management.Institute.(IWMI.2008).suggests.that.globally,.there.is.enough.water.to.produce.both.food.and.biofuel..But,.in.countries.where.water.is.already.scarce,.such.as.India,.growing.biofuel.crops.will.aggravate.existing.problems...Difference.in.requirements.are.highly.site-specific,.for.example.producing.one.litre.of.ethanol.from.sugarcane.takes.nearly.3,500.litres.of.irrigation.water.in.India,.but.just.90.litres.of.irrigation.water.in.Brazil..

The.Committee.on.Water.Implications.of.Biofuels.Production.in.the.United.States.(National.Research.Council,.2007).also.concluded.that.there.are.many.uncertainties.in.estimating.consump-tive.water.use.of.the.biofuel.feedstocks.of.the.future..Water.data.are.less.available.for.some.of.the.proposed.cellulosic.feedstocks,.for.example,.native.grasses.on.marginal.lands,.than.for.widespread.and.common.crops.such.as.corn,.soybeans,.sorghum,.and.others..Neither.the.cur-rent.consumptive.water.use.of.the.marginal.lands.nor.the.potential.water.demand.of.the.native.grasses.is.well.known..Further,.while.irrigation.of.native.grass.today.would.be.unusual,.this.could.easily.change.as.production.of.cellulosic.ethanol.gets.underway..In.the.next.5.to.10.years,.in-creased.agricultural.production.for.biofuels.will.probably.not.alter.the.US.national-aggregate.view.of.water.use..However,.there.are.likely.to.be.significant.regional.and.local.impacts.where.water.resources.are.already.stressed.

http://dx.doi.org/10.1007/s11269-006-9039-x

http://dx.doi.org/10.1007/s11269-006-9039-x

http://dx.doi.org/doi:10.1073/pnas.0908069106




Conclusion

Compounding.the.uncertainties.revealed.in.previous.sections,.we.see.that.a.broad.range.of.other.environmental.effects.add.further.difficulties.in.accurately.predicting.the.effects.of.biofuel.produc-tion.in.a.given.location.at.some.point.in.the.future...The.main.problem.resides.in.the.magnitude.of.localized.effects,.including.climatic.variables,.availability.and.therefore.cost.of.water.as.well.as.the.various.pests.and.diseases.present..This.strongly.suggests.therefore.that.extensive.pre-testing.at.the.pilot.stage.is.required.for.all.prospective.biofuel.projects.in.every.new.setting..The.problem.is.that.ILUC.effects.will.only.truly.be.understood.in.retrospect.after.major.programs.are.carried.through..For.this.reason,.ILUC.modelling.becomes.the.only.way.to.judge.the.possible.impacts.and.this.is.covered.in.the.following.section.

5. examples of seleCT bIofuels IluC sTuDIesIn.this.section,.we.will.discuss.examples.of.different.models.used.to.quantify.ILUC.as.well.as.their.shortcomings,.followed.by.some.examples.of.biofuels.ILUC.findings.in.recent.studies..Most.authors.expect.that.an.increase.in.biofuel.production.will.lead.to.LUC,.either.directly.or.indirectly.(for.example,.see.Righelato.and.Spracklen.2007)..Permutations.and.combinations.of.LUC.are.endless..For.example,.for.a.land.use.trajectory.where.the.initial.land.use.system.is.tropical.forest,.three.classes.of.conversion.were.distinguished.by.Coulter.(1992):

n. High.input-high.output.systems.(tree.crops.such.as.rubber,.oil.palm)..This.is.common.in.South.East.Asia,.where.farmers.clear.land.that.has.been.logged.(Moad.and.Whitmore.1994);.

n. Pasture.production.for.cattle.farming.usually.after.one.upland.rice.cycle..This.is.the.major.type.land.conversion.in.Honduras.(Sunderlin.and.Rodriguez.1996),.Puerto.Rico.(Aide.et.al.1996),.and.Latin.America.(FAO.1997).and.is.the.dominant.option.for.smallholders;

n. Low.input-low.output.slash.and.burn.agriculture..This.is.the.most.common.cause.of.defor-estation.in.Africa.(FAO.1997).and.is.frequent.in.Asia.

The many approaches to modelling IluC

Attempts.to.quantify.LUC.rely.on.models,.and.there.are.many.approaches,.which.we.present.but.in.brief.here...Pontius.and.Neeti.(2010).identified.the.following.categories:

n. Models.containing.calibration.algorithms;n. Statistical.models.creating.a.probability.function.as.an.output.that.require.calibration.using.

historic.data,.such.as.CLUE.(http://www.cluemodel.nl/),.used.together.with.scenario.model-ling.(Verburg.et.al.2002);

n. Agent-based.models.simulate.decision-making.by.human.actors.who.influence.land.change,.and.tend.to.have.many.input.parameters.(Manson.and.Evans.2007)..

Other.models.combine.the.above.techniques.(Pontius.et.al.2007)..All.models.have.parameters.where.values.need.to.be.assigned.to.run.the.model...For.example,.the.Forest.Land.Orientated.Resources.Envisioning.System.(FLORES).has.been.used.and.adapted.to.understand.LUC.at.the.humid.forest.margins.of.South.East.Asia.and.Central.Africa.(Robiglio.et.al.2003,.Vanclay.2003)..The.assumptions.of.FLORES.include.that.land-use.decisions.are.complex.and.that.actors.consider.all.of.their.options.within.the.constraints.of.the.financial,.labour.and.technical.resources.available.as.well.as.within.their.knowledge.and.perception.limitations.(Vanclay.2003)...

Bondeau.et.al.(2007).described.the.Lund–Potsdam–Jena.model.of.managed.Land.(LPJmL).developed.by.Sitch.et.al.(2003)..This.model.looks.at.the.changing.area.of.croplands..According.to.their.assumptions,.total.cropland.area.increased.rapidly.until.the.1950s..It.then.slowed.and.reached.an.equilibrium.position.in.the.1980s.when.tropical.deforestation.rate.was.balanced.by.


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temperate.afforestation.(Ramankutty.and.Foley.1999).data.set...Results.therefore.disagree.with.those.of.Houghton.(2003).from.1970.onwards..

As.another.example,.regulators.in.the.U.S..have.used.a.combination.of.modelling.tools.to.analyse.lifecycle.GHG.emissions.and.biofuel.ILUC.impacts...They.are.not.limited.to.but.include:

n. The.Forestry.and.Agricultural.Sector.Optimization.Model. (FASOM):.A.partial.equilibrium.economic.model.of.the.U.S..forest.and.agricultural.sectors.that.tracks.over.2,000.production.inputs.for.field.crops,.livestock.and.biofuels.and.accounts.for.GHG.emissions.changes.from.most.agricultural.activities...Regulators.selected.the.FASOM.model.because.comprehensive.forestry.and.agricultural.sector.model.that.tracks.over.2,000.production.possibilities.for.field.crops,.livestock,.and.biofuels.for.private.lands.in.the.contiguous.U.S.

n. Greenhouse.gases,.Regulated.Emissions,.and.Energy.use. in.Transportation. (GREET):.A.spreadsheet.analysis.tool.developed.by.Argonne.National.Laboratories:.GREET.includes.the.GHG.emissions.associated.with.the.production.and.combustion.of.fossil.fuels..GREET.also.estimates.the.GHG.emissions.associated.with.electricity.production.required.for.agriculture.and.biofuel.production...

n. Integrated.Food.and.Agricultural.Policy.and.Research-Center.for.Agricultural.and.Rural.De-velopment.(FAPRI-CARD).at.Iowa.State.University:.These.models.capture.the.biological,.technical,.and.economic.relationships.among.key.variables.within.a.particular.commodity.and.across.commodities.....

n. The.Global.Trade.Analysis.Project.(GTAP).This.model.was.developed.to.estimate.global.flows.in.agricultural.commodities.in.response.to.prices.and.policy.changes.

Sources.of.uncertainty.and.error.in.the.outcome.of.model.runs.may.derive.from:n. The.input.data,.digital.maps.and.remote.sensing.interpretation;n. How.well.algorithms.included.in.the.model.express.important.processes.and.simulate.domi-

nant.LUCs;n. Uncertainty.in.predicting.future.LUC.processes..Decision.making.involves.human.free.will,.

which.is.difficult.to.model.and.maybe.illogical.(Pontius.and.Neeti.2010).

Some.examples.of.errors.in.LUC.assessments.and.models.are.below..They.include:n. Misinterpretation.of.the.extent.of.the.original.vegetation;n. Difficulty.in.distinguishing.between.certain.land.uses;n. Treating.LUC.as.linear.and.ignoring.cyclical.processes.such.as.shifting.cultivation.(Mertens.

and.Lambin.2000).

Deforestation.in.West.Africa.is.given.as.an.example.to.illustrate.these.error.types...According.to.estimated.deforestation.rates.in.West.Africa,.90%.of.the.‘original’.moist.forest.has.been.lost.(Bry-ant.et.al.1997)..Slash.and.burn.agriculture.is.cited.as.the.major.cause.of.forest.loss.(FAO.1997)..However,.the.extent.of.the.so-called.original.forest.is.unclear..Researchers.and.early.explorers.during.the.colonial.era.who.observed.forest.patches.with.tall.trees.in.the.savannah.or.in.bush.land.assumed.that.these.indicated.the.past.presence.of.a.more.extensive.closed.canopy.forest.of.which.they.were.mere.relicts.(Chevalier.1909;.Aubréville1938,.1949).and.thus.the.entire.area.of.the.surrounding.savannah.was.assumed.to.be.previously.forest..

This.conclusion.has.been.challenged.by.researchers.in.fields.as.disparate.as.anthropology.(Fair-head.and.Leach.1994,.1996;.Bassett.and.Koli.Bi.2000,.Ickowitz.2006),.botany.(Goetze.et.al.2006,.Hennenberg.et.al.2005).and.palynology.(Maley.and.Brenac.1998,.Vincens.et.al.2000)..Fairhead.and.Leach.(1994,.1996),.have.analysed.reports.in.West.Africa.and.concluded.that.forest.cover.has.increased.in.the.last.century..Tree.cover.has.been.enhanced.by.cultivation.along.the.forest.savannah.boundaries.by.promoting.forest.succession.after.removal.of.grasses.through.hoeing..Other.evidence.has.attributed.major.changes.in.vegetation.cover.to.climate.changes.(Maley.and.Brenac.1998)..

http://dx.doi.org/10.1029/1999GB900046

http://dx.doi.org/10.1034/j.1600-0889.2003.01450.x

http://dx.doi.org/10.1007/s11625-009-0095-z

http://dx.doi.org/10.1111/j.0012-155X.2006.00492.x

http://dx.doi.org/10.1111/j.1365-2699.2005.01312.x

http://dx.doi.org/10.1017/S0266467404002160

http://dx.doi.org/10.1016/S0034-6667%2897%2900047-X

http://dx.doi.org/10.1016/S0034-6667%2800%2900009-9

http://dx.doi.org/10.1016/S0034-6667%2897%2900047-X

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Remote.sensing.interpretations.of.land.use.cover.are.prone.to.error,.if.not.backed.up.with.extensive.ground.truthing,.due.to.the.difficulty.of.distinguishing.certain.land.use.types..For.ex-ample,.Thenkabail.(1999),.analysed.HRV.SPOT.data.of.central.Cameroon.from.March.1995..He.concluded.that.Imperata cylindrica.(spear.grass),.an.aggressive.weed.that.spreads.after.cultivation.and.can.cause.farmers.to.abandon.land,.occupied.more.than.10%.of.the.land.area..This.area.was.subsequently.classified.by.the.Global.Alternatives.to.Slash.and.Burn.Programme.(Kotto.Same.et.al.2000).as.having.a.high.human.population.density,.high.intensity.and.consequently.“only.4%.of.land.remains.covered.by.primary.forest’.and.‘the.stock.of.forest.resources.has.been.seriously.degraded”..

Yet,.more.recent.work.revealed.that. Imperata cylindrica.coverage.is. low..According.to.the.reports.of.villagers,.most.of.this.land.has.not.been.cultivated.recently.(Gockowski.personal.com-munication,.Norgrove.2006)..This.misinterpretation.of.remote.sensing.data.is.understandable;.Mertens.and.Lambin.(2000).working.near.Bertoua.in.East.Cameroon.looked.at.land.cover.trajec-tories.from.1973.to.1991.and.found.that.nearly.10%.of.land.was.classified.as.stable.savannah.or.permanent.agriculture,.and.these.two.land.use.types.were.indistinguishable..Doumenge.et.al.(2001),.also.working.in.Cameroon,.stated.that.it.was.not.possible.to.distinguish.natural.forest-.savannah.mosaics.from.cultivated.areas..

Grieg-Gran.(2006).reported.that.deforestation.in.the.Congo.Basin.is.driven.by.smallholder.shift-ing.cultivation..Certainly,.smallholders.clear.land.for.agriculture,.however,.net.clearance.requires.subtracting.the.amount.of. land.that. is.returning.to.forest.fallow.and.this. is.often.overlooked..Robiglio.and.Sinclair.(2007).compared.the.aerial.photos.from.the.1950s,.and.satellite.imageries.of.1980s.and.2001.and.demonstrated.that.in.some.parts.of.southern.Cameroon.the.area.of.land.previously.in.agriculture.but.currently.in.fallow.was.greater.than.the.area.of.land.previously.in.for-est.and.currently.under.agriculture,.in.both.the.1980s.and.2001..

The searchinger analysis of biofuels IluC

Recent.studies.on.biofuels.and.ILUC.have.been.greatly.influenced.by.the.paper.of.Searchinger.et.al.(2008).that.discusses.the.hypothetical.ILUC.impacts.of.increased.biofuel.production..Their.paper.looked.at.what.impact.increasing.maize.bioethanol.production.in.the.U.S..by.75%,.an.ad-ditional.56.billion.litres,.by.2016.would.have.on.land.use..These.figures.were.input.to.the.FAPRI-CARD.model..This.would.mean.that.12.8.million.ha.of.existing.cropland.in.the.U.S..would.be.diverted.to.maize.production,.achieved.by.changing.the.land.use.of.areas.currently.under.soy.and.wheat.and.U.S..exports.of.wheat.and.soy.would.decrease.(wheat.by.31%)..

The.model.predicted.that.price.increases.would.be.40%,.17%.and.20%.for.maize,.wheat.and.soy,.respectively..They.hypothesised.that.this.would.lead.to.more.than.10.million.hectares.being.brought.into.production.elsewhere.in.the.world,.particularly.Brazil.for.soy.and.China.for.wheat.and.maize.and.particularly.from.forest.clearance..This.would.result.in.the.release.of.3.8.billion.mega-tons.of.CO2-equivalent.GHGs.–.a.carbon.debt.that.would.take.more.than.150.years.to.repay.(Searchinger.et.al.2008)...While.the.Searchinger.paper.has.been.widely.quoted,.there.have.been.many.papers.criticizing.the.assumptions.made,.its.conclusions.and.their.general.application.

According.to.Mathews.and.Tan.(2009),.the.Searchinger.paper.has.the.following.flaws..First,.the.expected.ethanol.consumption.of.56.billion.litres.by.2016.is.a.weak.assumption.as.is.the.concept.that.this.would.be.obtained.exclusively.from.maize.grown.in.the.U.S..It.has.been.shown.in.the.cur-rent.paper.that.bioethanol.production.is.more.efficiently.produced.from.other.crops,.even.within.the.U.S...It.would.therefore.be.more.realistic.to.look.at.other.domestic.sources.of.bioethanol.or.to.suggest.that.bioethanol.from.sugar.cane.is.imported.from.Brazil,.but.this.idea.is.not.explored..So.it.is.assumed.that.needs.are.met.entirely.within.the.U.S..Furthermore,.the.supply.and.demand.elasticities.used.are.based.on.historical.figures.

http://dx.doi.org/10.1080/014311699212966




http://dx.doi.org/10.1002/bbb.147



The.calculations.of.the.extra.hectarage.needed.in.other.countries.to.make.up.for.diversion.of.maize.to.ethanol.specify.locations.(Brazil,.India,.China).and.assume.that.this.production.will.come.from.land.conversion.from.forest..Figures.are.based.on.observations.from.the.1990s.in.countries.such.as.China.and.India.(Houghton.2003)..They.do.not.consider.intensification,.yield.increases,.crop.switching.or.use.of.degraded.land.as.options...They.do.not.consider.the.complexity.of.fac-tors.and.drivers.in.LUC.and.uncertainty.in.the.models.and.there.is.much.literature.showing.that.LUC.is.not.driven.only.by.agricultural.expansion.but.that.timber.extraction.and.road.building.are.major.interacting.factors..

Also,.as.discussed.earlier,.carbon.emission.figures.presented.by.Houghton.(2003).are.larger.than.those.from.other.authors.(Bondeau.et.al.2007.and.others).who.highlight.the.uncertainty.in.global.carbon.dynamics..The.figures.presented.on.carbon.losses.also.do.not.take.into.account.cropping.management.(Kim.et.al.2009).although.the.importance.of.considering.tillage.regimes.and.nitrogen.usage.is.highlighted.earlier.in.this.paper...Instead.there.is.an.arbitrary.assumption.that.when.land.is.cultivated.there.is.a.25%.loss.in.SOC,.although.in.the.previous.section.of.this.paper.it.is.demonstrated.that.SOC.can.increase.in.certain.contexts..Other.problems.are.that.there.are.no.margins.of.error.quoted.in.the.paper.and.no.discussion.of.the.assumptions.used...

Searchinger.(2008).rebutted.these.technical.objections.and.recent.work.by.Yan.et.al.(2010).has.provided.further.support.for.his.position.on.ILUC..They.conclude,.from.both.U.S..and.Chinese.data,.that.soybean,.rapeseed.and.jatropha.biodiesel.all.appear.at.first.sight.to.have.favourably.low.GHG.emissions.in.relation.to.diesel,.but.that.their.“well.to.wheel”.GHG.releases.are.increased.significantly.when.land-use.change.is.taken.into.account..Hence.biodiesel.from.soybean,.rape-seed.or.jatropha.could.cut.emissions.but.by.very.little.if.carbon-storing.forests.and.grasslands.are.cleared.to.grow.these.crops..Only.cellulosic.biomass.has.significant.potential.for.cutting.transport.emissions,.because.it.has.minimal.land-use.impacts..They.warn.that.converting.grasslands.in.the.U.S..to.maize.fields.for.bioethanol.production.could.cause.a.huge.carbon.debt.through.direct.land-use.change..Diverting.U.S..maize.exports.to.bioethanol.production.could.potentially.cause.an.even.greater.carbon.debt.through.ILUC.

Finally,.and.most.recently,.further.support.for.Searchinger.comes.from.Lapola.et.al.(2010).who.looked.at.potential.land-use.changes.from.biofuel.expansion.in.Brazil.which.almost.certainly.will.continue.to.be.a.major.source.of.global.biofuels..“To fill the biofuel production targets for 2020, sugarcane would require an additional 57,200 sq km and soybean an additional 108,100 sq km of land. Roughly 88% of this expansion (145,700 sq km) would take place in areas previously used as rangeland,”.say.the.authors..Their.simulations.suggest.that.direct.deforestation.would.mean.de-struction.of.a.fairly.modest.1,800.sq.km.of.forest.and.2,000.sq.km.of.woody.savannah.in.the.case.of.soybean..However,.their.models.also.suggest.that.large.areas.of.rainforest.and.cerrado.(savannah).would.be.indirectly.impacted.as.displaced.cattle.ranchers.find.such.new.lands.to.exploit..

When.it.came.to.carbon.payback.times,.the.authors.found.that.four.years.would.be.needed.to.compensate.for.direct.emissions.from.conversion.for.cane.relative.to.emissions.from.fossil.fuels.and.35.years.for.soy.biodiesel..But.factoring.in.ILUC.–.in.this.case.cattle.ranching.displaced.to.forest. lands.by.cropland.expansion.–.dramatically.extends.the.amount.of.time.needed.for.emissions.savings.from.biofuel.production.to.compensate.for.emissions.from.deforestation:.by.40.years.for.sugarcane.ethanol.and.211.years.for.soy.biodiesel...“Indirect land-use change could considerably compromise the GHG savings from growing biofuels, mainly by pushing rangeland frontier into the Amazon forest and Brazilian Cerrado savanna,”.Lapola.and.colleagues.write..The.authors.suggest.that.planting.oil.palm.instead.of.sugarcane.or.soy.on.pasture.lands.would.result.in.some.direct.deforestation.(300.sq.km).but.significantly.reduce.emissions.from.ILUC.due.to.the.crop’s.substantially.higher.oil.yield.

http://dx.doi.org/10.1034/j.1600-0889.2003.01450.x

http://dx.doi.org/10.1034/j.1600-0889.2003.01450.x

http://dx.doi.org/10.1111/j.1365-2486.2006.01305.x

http://dx.doi.org/10.1021/es802681k

http://www.rsc.org/Publishing/Journals/EE/article.asp?doi=b915801d



Conclusion

To.estimate.the.effects.of.ILUC.into.the.future,.modelling.is.required,.but.there.is.no.standard.and.agreed.method.to.do.it,.and.no.sign.that.a.consensus.is.near..Indeed.the.current.debate.about.ILUC.between.scientists.is.intense,.as.may.be.expected.from.a.field.of.study.that.only.opened.up.two.years.ago..Whatever.the.objections.to.the.assumptions.and.methods.employed.by.Search-inger.et.al.(2008).it.is.surely.undeniable.that.if.the.biofuel.industry.expands.to.the.point.where.it.is.making.a.global.impact.on.GHG.emissions,.then.indirect.effects.will.exist.and.become.more.important.and.possibly.self-defeating...

As.in.previous.sections,.uncertainties.abound,.with.doubts.about.fundamental.measurements.such.as.the.availability.of.unassigned.land,.the.extent.to.which.marginal.land.can.be.utilized.and.the.yields.that.can.be.expected.in.a.future.where.availability.of.sufficient.water.is.increasingly.uncertain..All.these.factors.and.others.lead.to.the.inevitable.conclusion.that.the.outputs.of.models.must.be.treated.with.considerable.caution.and,.because.of.the.global.gravity.of.land.use.issues.in.a.crowded.world,.that.ILUC.effects.must.be.considered.plausible.and.substantial.until.strong.evidence.to.the.contrary.is.provided.

In.the.concluding.section.we.will.elaborate.on.the.multiple.categories.of.uncertainty.that.need.very.careful.definition.and.delimitation.as.first.steps.towards.clarification.of.these.complex.is-sues..The.situation.is.seemingly.much.more.difficult.than.with.climate.change.modelling,.which.at.least.can.rely.on.one.hundred.years.of.accurate.weather.recordings,.so.that.models.can.be.back-casted..Hence.the.accuracy.with.which.climate.models.reproduce.past.climate.variations.gives.considerable.confidence.that.modellers.are.on.the.right.track..No.such.possibility.exists.for.ILUC.and.associated.biofuels.issues..

6. regulaTory anD legIslaTIve aCTIons unDerTaKen To ConTrol IluC from bIofuelsSeveral.regions.or.individual.countries.have.incorporated.ILUC.estimations.into.LCAs.of.GHG.emissions.resulting.from.the.production.of.renewable.biofuels...Estimation.of.such.unintended.consequences.of.carbon.emissions.from.LUC.is.an.evolving.scientific.process.with.substantial.data.gaps.and.uncertainties...Nonetheless,.legislative.and.regulatory.action.to.address.carbon.emissions.broadly,.and.the.contribution.of.ILUC.induced.by.mandated.biofuels.use.specifically,.is.proceeding.in.parallel.to.the.advancing.science...Currently,.there.is.no.internationally.agreed.policy.or.methodology.for.addressing.ILUC.impacts.for.biofuels.production.and.use...This.section.briefly.describes.the.major.regulatory.and.legislative.actions.taken.to.require.ILUC.considerations.in.the.development.of.biofuels.programs.

european union: renewable energy Directive

On.17.December.2008,.the.European.Parliament.approved.the.Renewable.Energy.Sources.Di-rective.(COM/2008/19).(RED).and.amendments.to.the.existing.Fuel.Quality.Directive.(Directive.2009/30/EC).(FQD),.which.include.sustainability.criteria.for.the.production.and.use.of.biofuels.and.requires.ILUC.to.be.considered.in.the.development.of.these.criteria...The.Renewable.Energy.Directive.(Directive.2009/28/EC).set.the.EU.target.of.10%.for.biofuel.use.in.transportation.fuels,.whereas.the.Fuel.Quality.Directive.established.a.Low.Carbon.Fuel.Standard.(LCFS).to.achieve.a.6%.reduction.in.GHG.emissions.of.transport.fuels.by.2020...

As.part.of.the.implementation.of.the.increased.biofuels.production.and.use,.the.EU.directed.that.calculation.of.GHG.emissions.include.all.main.contributions,.including.the.indirect.effects..The.directive.did.not.specify.the.approach.(methods.for.determining.ILUC).or.the.defined.limits.





for.such.determination,.instead.it.directed.the.European.Commission.to.develop.the.factors.for.ILUC.impacts.on.GHG.emissions.based.on.the.best.available.science,.and.to.make.proposals.on.how.to.address.the.issue.of.ILUC...Under.the.mandate,.the.Commission.is.to.deliver.its.report.on.methodology.and.limits.by.31.December.2010...

Directive.2009/28/EC.on the promotion of the use of energy from renewable sources and amending and subsequently repealing Directives 2001/77/EC and 2003/30/EC,.also.known.as.the.Renewable.Energy.Directive.or.RED, .presents.several.clauses.on.the.need.to.carefully.establish.the.sustainability.criteria.to.monitor.and.reduce.GHG.emissions.from.transport.fuels.and.biofuels...The.directive.text.clearly.indicates.that.emissions.from.domestic.and.international.LUCs.resulting.from.biofuels.need.to.be.incorporated.into.the.calculations;.however,.it.recognizes.that.the.sci-ence.needs.to.continue.to.develop.to.do.so...The.RED.further.recognizes.that:

n. Biofuel.production.should.be.sustainable.and.national.programmes.fulfil.sustainability.criteria;n. Biofuels.and.bioliquids.should.avoid.destruction.of.biodiverse.lands;n. GHG.emissions.should.attempt.to.use.actual.values.for.carbon.stocks.associated.with.land.

use.and.conversions;n. Concrete.methodology.should.be.developed.to.minimize.GHG.emissions.caused.by.ILUC.

and.the.best.available.scientific.information.should.be.analyzed.

As.a.legislative.action.by.the.EU,.the.RED.has.spelled.out.the.requirements.for.implementing.sustainability.criteria.that.incorporate.consideration.of.ILUC...Annex.V.of.the.RED.provides.for.the.rules.for.calculating.the.GHG.impacts.of.biofuels,.bioliquids.and.their.fossil.fuel.comparators...The.Annex.V.includes.the.following.rules:..

n. Typical.and.default.values.for.biofuels.if.produced.with.no.net.carbon.emissions.from.land-use.change;

n. Estimated.typical.and.default.values.for.future.biofuels.that.were.not.on.the.market.or.were.on.the.market.only.in.negligible.quantities.in.January.2008,.if.produced.with.no.net.carbon.emissions.from.land-use.change;

n. Specific.methodology.for.calculation.of.GHG.emissions.from.the.production.and.use.of.transport.fuels,.biofuels.and.bioliquids;.and

n. Disaggregate.default.values.for.biofuels.and.bioliquids,.and.for.processing,.transport.and.distribution.of.fuels.

The.EU.recognized.that.increased.demand.for.biofuels.would.result.in.increased.agricultural.land.use.and.potentially.this.could.include.conversion.of.carbon-rich.land.areas.into.agricultural.land.that.could.cause.adverse.carbon.emissions.impacts...The.RED.includes.provisions.to.prevent.the.risks.of.emissions.from.direct.LUCs.in.the.production.of.biofuels.by.defining.lands.that.are.not.eligible.to.be.used.for.producing.feedstocks.for.biofuels.under.the.Directive...Included.in.this.restriction.are.high.carbon.stock.lands.such.as.wetlands.and.forested.areas.having.canopy.cover.of.30%.or.more...Forested.areas.with.a.canopy.cover.between.10%.and.30%.must.be.included.in.the.restriction.unless.it.can.be.demonstrated.that.their.carbon.stock.is.low.enough.to.justify.conversion.to.biomass-feedstock.within.the.rules.set.by.the.Directive...The.European.Commis-sion.has.conducted.a.consultation.to.establish.the.definition.for.“highly.diverse.grasslands”.to.establish.the.criteria.and.geographic.ranges.that.should.be.covered.within.the.RED...The.final.conclusions.from.this.consultation.on.grasslands.definition.are.pending.

In.March.2010,.the.European.Commission.released.a.large.number.of.documents.relating.to.its.work.on.ILUC.under.the.Directive.2009/28/EC,.including.available.results.from.the.Partial.Equilibrium.Modelling...These.results.indicate.that.a.1.25%.increase.in.EU.biofuel.consumption.would.require.around.5.million.additional.hectares.of.land.globally...Results.of.a.General.Equilibrium.Model.were.also.released.that.analyzed.different.scenarios.for.biofuel.use.varying.from.5.6%.to.8.6%.of.road.transport.fuels...These.results.also.showed.that.ILUC.effects.off-set.part.of.the.emissions.benefits.from.the.use.of.biofuels.above.5.6%.level...Furthermore,.above.this.threshold,.ILUC.emissions.increase.at.greater.rate.that.can.erode.the.environmental.sustainability.of.biofuels.



The.RED.identified.ILUC.as.an.issue.that.needed.further.investigation.and.study...In.response.to.this.directive.and.timeline,.the.Commission.published.Terms.of.Reference.for.the.Indirect.LUC.Impact.of.Biofuels...This.reference.builds.on.earlier.work.that.examined.overall.economic.and.environmental.impacts.of.the.EU.biofuels.policy.and.specific.trade.issues.associated.with.the.policy...The.subsequent.reference.establishes.three.modelling.exercises.on.ILUC:

n. Using.a.general.equilibrium.model;n. Using.a.partial.equilibrium.model;n. Comparing.other.global.modelling.approaches.

The.purposes.of.this.second.phase.of.biofuels.and.ILUC.study.are.to.address.questions.raised.in.the.earlier.effort.and.to.produce.a.more.detailed.and.reliable.estimate.of.ILUC.impacts.from.improvements.in.databases.and.modelling...The.outcome.of.this.study.is.a.report.that.analyses.the.global.agricultural.production,.trade.and.environmental.impact.of.the.EU.biofuels.policy.within.the.RED...Focus.is.on.the.ILUC.effects.of.the.main.feedstocks.used.for.biofuels.production...The.objective.is.to.contribute.to.the.impact.assessment.and.report.on.ILUC.and.possible.Commission.proposals.on.how.to.best.deal.with.ILUC.under.the.RED...

To.support.this.additional.work.and.the.possible.proposals.for.dealing.with.ILUC,.the.Commis-sion.carried.out.a.consultation.(governmental.and.private.inputs).on.a.defined.range.of.options.for.addressing.ILUC..Responses.to.the.consultation.were.received.from.17.countries.and.59.organizations...Even.though.the.deadline.for.the.report.on.ILUC.impacts.on.GHG.emissions.from.the.biofuels.policy.is.not.due.until.December.2010,.the.Commission.is.using.the.results.of.this.consultation.to.help.prepare.a.report.(March.2010).for.use.by.Member.States.in.preparing.their.national.Renewable.Energy.Action.Plans,.which.must.be.submitted.by.the.end.of.June.2010...The.consultation.demonstrated.that:

n. Member.states.are.widely.divided.on.the.issue.of.ILUC,.and.no.single.policy.option.is.fa-voured;

n. No.agreement.exists.either.on.the.issue.of.ILUC.outside.the.EU;n. Many.commenters.indicated.that.issues.on.ILUC.are.not.well.enough.defined.to.determine.

the.best.policy.options;n. Further.scientific.analysis.and.discussions.are.needed.before.ILUC.policy.can.be.established.

A.more.recent.issue.being.discussed.within.the.RED.implementation.is.waste.oils/residues,.tallow,.black.liquor.and.tall.oil.traditionally.used.for.feedstock.to.make.soaps,.detergents.and.other.related.chemicals,.and.now.being.more.often.used.as.substitutes.for.food-based.(grains).feed-stocks.for.biofuels.production...The.consequence.of.this.substitution.would.be.soaps/detergents/chemicals.producers.seeking.out.other.economic.feedstocks,.such.as.palm.oil.that.could.result.in.ILUC.impacts...Feedstocks.that.would.go.into.production.of.next-generation.renewable.fuels.will.need.to.consider.ILUC.effects.

united Kingdom: renewable Transport fuel obligation

The.UK.Renewable.Transport.Fuel.Obligation.(RTFO).program.requires.transport.fuel.suppliers.provide.5%.of.their.fuels.from.renewable.sources.by.2010...The.requirement.was.authorized.by.the.Energy.Act.of.2004,.which.came.into.effect.in.April.2008,.and.is.intended.to.help.the.UK.achieve.the.EU.biofuels.directive.targets...Although.not.mandated.by.the.legislation,.the.Renew-able.Fuels.Agency.(RFA).was.asked.to.conduct.a.review.of.the.impacts.from.this.requirement.and.increased.biofuels.production,.including.consideration.of.ILUC.and.changes.in.food.and.other.commodity.supplies.and.pricing...

The.RFA.study,.referred.to.as.the.Gallagher.Review,.was.published.in.July.2008.and.concluded.that.risks.exist.from.increasing.biofuels.production.and.demand,.and.that.although.uncertainties.exist.in.the.estimations,.feedstock.production.should.avoid.lands.otherwise.used.for.food.crops...



The.review.also.concluded.that.“quantification.of.GHG.emissions.from.indirect.land-use.change.requires.subjective.assumptions.and.contains.considerable.uncertainty.”..Because.of.this,.the.report.recommended.further.investigation.and.study.to.better.understand.the.impacts.of.indirect.effects,.including.ILUC.and.other.factors...The.UK.regulators.are.working.closely.with.the.EU.offi-cials.on.development.of.appropriate.methodologies.to.take.ILUC.into.account.for.GHG.emissions.from.biofuels.production.and.use.

united states: renewable fuels standard program

On.3.February.2010,.the.U.S..Environmental.Protection.Agency.(EPA).issued.the.final.regulations.for.the.federal.Renewable.Fuels.Standard.Program.(RFS2)...This.regulation.makes.changes.to.the.program.as.required.by.the.Energy Independence and Security Act of 2007.(EISA;.P.L..110-140)...The.statute.requires.increased.annual.use.of.renewable.fuels.in.transportation.fuel,.modi-fies.definitions.and.criteria.for.feedstocks.and.renewable.fuels.made.from.them,.and.establishes.GHG.emissions.reductions.thresholds.as.determined.by.LCAs.for.these.fuels...The.LCAs.must.take.into.account.the.direct.and.indirect.emissions.impacts.of.the.production.and.use.of.the.re-newable.fuels...

The.final.regulations.issued.by.EPA.for.the.RFS2.program.does.not.directly.include.provisions.on.ILUC.or.specific.requirements.for.conducting.LCA.on.biofuels..The.EPA.used.the.LCA.(with.incorporated.ILUC.impacts).process.to.help.identify.the.renewable.fuel.pathways.that.meet.the.statutory.GHG.reduction.thresholds,.and.thereby.qualify.for.compliance.under.the.RFS2.program...The.final.regulations.include.provisions.for.biofuel.producers.to.petition.the.EPA.for.evaluation.of.new.renewable.fuel.pathways...The.RFS2.regulations.require.that.biofuels.producers.con-duct.a.certified.engineering.assessment.and.attest.engagement.for.production.processes.and.feedstock(s).used...The.biofuels.producer.(either.domestic.or.foreign).must.also.register.into.the.program.and.maintain.documentation.and.recordkeeping.to.ensure.that.the.renewable.fuel.meets.the.requirements.to.qualify.for.use.under.the.RFS2.program...This.documentation.must.also.indi-cate.the.renewable.fuel.feedstock.source.thereby.allowing.EPA.to.monitor.land.use.

Obligated.parties.for.the.RFS2.regulations.include.domestic.and.foreign.producers.and.import-ers.of.transportation.fuels.used.in.the.U.S...This.regulation.also.establishes.the.2010.RFS.volume.standard.for.each.obligated.party.within.the.four.categories.of.renewable.fuels.set.in.the.EISA:.conventional.renewable.fuel;.advanced.biofuel;.biomass-based.diesel.fuel.and.cellulosic-based.biofuel...This.final.regulation.is.effective.on.July.1,.2010,.and.the.percentage.standards.apply.to.all.gasoline.and.diesel.fuel.produced.or.imported.in.2010...It.must.be.emphasized.that.ILUC.are.incorporated.into.the.LCA.for.biofuels.to.determine.whether.or.not.they.qualify.for.the.GHG.emissions.reductions.required.by.the.four.biofuel.categories.under.EISA.–.there.are.no.specific.standards.on.ILUC.in.the.RFS2.regulation..

The.EISA.legislation.established.the.general.requirements.for.considering.the.lifecycle.GHG.emissions.of.renewable.fuels.and.incorporation.of.direct.and.significant.indirect.emissions...The.legislation.also.provides.for.definitions.for.renewable.fuel.and.advanced.biofuel.as.those.produced.from.renewable.biomass.(also.defined).that.is.used.to.replace.or.reduce.fossil.fuel...The.provi-sions.further.provide.definitions.for.each.of.the.categories.of.qualified.biofuels.under.the.program,.namely,.renewable.fuel.(including.conventional.biofuel),.advanced.biofuel,.cellulosic.biofuel.and.biomass-based.diesel...

It.also.established.the.meaning.for.baseline.lifecycle.GHG.emissions...One.of.the.most.sig-nificant.provisions.in.the.statute.is.the.setting.of.GHG.emissions.reductions.thresholds.for.the.renewable.fuels.to.quality.for.compliance.purposes.under.the.RFS2.program...EPA.was.required.to.conduct.a.LCA.of.each.biofuel.type.to.determine.whether.or.not.it.can.meet.the.thresholds..The.statute.allows.for.EPA.to.consider.flexibility.for.these.reduction.thresholds;.however,.in.the.



final.regulation.the.agency.retained.those.specified.by.the.law...EPA.followed.the.mandate.of.the.statute.in.considering.the.full.lifecycle.GHG.emissions.impacts.of.fuel.production.from.both.direct.and.indirect.emissions,.including.significant.emissions.from.LUCs...The.EPA.analyses.attempted.to.incorporate.the.“most.up-to-date”.science.and.methodologies.during.the.rulemaking.effort...The.agency.recognized.that.LCA.is.an.evolving.discipline.and.plans.to.re-evaluate.their.analyses.as.new.information.becomes.available...The.EPA.also.intends.to.ask.the.National.Academy.of.Sciences.for.assistance.and.input.to.the.process...

Throughout.the.regulatory.process.for.the.RFS2,.EPA.solicited.expert.input.to.evaluate.key.components.of.EPA’s.methodology.on.LCA.and.LUC:..

n. Land.use.modelling,.specifically.the.use.of.satellite.data.and.land.conversion.GHG.emission.factors;

n. Methods.to.account.for.the.variable.timing.of.GHG.emissions.associated.with.land.use;n. GHG.emissions.from.foreign.crop.production.(both.the.modelling.and.data.used);.and.n. How.the.models.are.used.together.to.provide.overall.lifecycle.estimates.

Based.on.public.comments.and.scientific.peer.review,.EPA.agreed.that.it.was.important.to.take.into.account.indirect.emissions.when.conducting.lifecycle.emissions.from.biofuels...It.was.also.clear.that.there.were.significant.uncertainties.associated.with.these.analyses,.particularly.with.regard.to.ILUC.and.the.use.of.economic.models.to.project.future.commodity.market.interactions.that.involve.biofuels,.feedstocks.and.agricultural.products...Working.closely.with.experts,.other.government.agencies.and.industry,.EPA.quantified,.to.the.extent.possible,.the.uncertainty.as-sociated.with.indirect.LUC.emissions,.including.international.changes,.associated.with.increased.biofuel.production...

To.manage.the.uncertainty.around.those.international.and.indirect.LUCs,.EPA.focused.on.three.approaches:

n. Getting.the.best.information.possible.and.updating.analyses.to.narrow.the.uncertainty;.n. Performing.sensitivity.analyses.around.key.factors.to.test.the.impact.on.the.results;.and.n. Establishing.reasonable.ranges.of.uncertainty.and.using.probability.distributions.within.these.

ranges.in.threshold.assessment.

From.its.assessments,.EPA.concludes.that.the.modelled.indirect.emissions.from.LUC,.includ-ing.international.changes,.were.“significant”.in.terms.of.their.relationship.to.total.GHG.emissions.for.given.fuel.pathways,.as.consistent.with.the.mandate.under.EISA...The.findings.in.these.analy-ses.were.incorporated.into.the.LCA.for.biofuels.to.determine.whether.or.not.they.qualify.for.the.GHG.emissions.reductions.required.by.the.four.biofuel.categories.under.EISA

California: low-Carbon fuels standard

On.1.January.2010,.the.California.Low.Carbon.Fuels.Standard.(LCFS).regulation.became.effective...The.regulation.is.designed.to.reduce.the.state’s.GHG.emissions.from.fuels.used.in.the.state.by.reducing.the.carbon.intensity.of.the.fuel.supplied.to.the.marketplace...This.reduction.in.carbon.intensity.(CI).is.being.phased-in.beginning.in.2011.and.will.achieve.a.10%.reduction.by.2020...In.determining.carbon.intensity.of.fuels,.the.California.Air.Resources.Board.(CARB).conducted.fuel.LCAs.that.incorporated.both.direct.and.indirect.impacts,.including.LUCs...The.regulations.were.adopted.on.23.April.2009,.and.final.administrative.approval.issued.on.12.January.2010..In.developing.the.LCFS,.the.CARB.established.a.process.to.evaluate.the.LCA,.including.direct.and.indirect.effects,.of.GHG.emissions.of.various.fuel.pathways...CARB.modified.available.models.to.incorporate.land.use.impacts.for.production.of.feedstocks.used.to.make.biofuels.for.the.LCFS.

CARB.calculates.fuel.CIs.under.the.LCFS.on.a.full.lifecycle.basis..This.means.that.the.CI.value.assigned.to.each.fuel.reflects.the.GHG.emissions.associated.with.that.fuel’s.production,.trans-



port,.storage,.and.use...Based.on.its.work.with.university.LUC.researchers,.CARB.staff.has.con-cluded.that.the.land.use.impacts.of.crop-based.biofuels.are.significant,.and.must.be.included.in.LCFS.fuel.CIs....CARB.believes.that.to.exclude.them.would.allow.fuels.with.CIs.that.are.similar.to.gasoline.and.diesel.fuel.to.function.as.low-carbon.fuels.under.the.LCFS...CARB.further.believes.this.would.delay.the.development.of.truly.low-carbon.fuels,.and.jeopardize.the.achievement.of.a.10%.reduction.in.fuel.CI.by.2020.

The.general.process.used.by.CARB.to.quantify.the.GHG.emissions.from.LUC.and.to.convert.those.emissions.to.a.CI.value.that.can.be.added.to.a.fuel’s.direct.CI.value.is.illustrated.in.Figure.4.

figure 4: luC Impact estimation process (Carb 2009).

Estimating.how.much.non-agricultural.land.is.converted.to.agricultural.uses.in.response.to.in-creased.demand.for.biofuels.requires.a.model.capable.of.simulating.the.multiple.economic.forces.driving.the.LUC.process..Models.of.the.international.agricultural.system.have.been.adapted.to.estimate.the.magnitude.of.biofuel-driven.LUC.impacts..The.GHG.emissions.generated.by.the.conversion.of.land.to.agricultural.uses.are.estimated.by.applying.emission.factors.to.the.acreage.of.land.converted..

Emission.factors.are.estimates.of.the.GHGs.released.from.each.converted.unit.of.land.area..GHGs.are.released.from.burned.or.decomposing.cover.vegetation.and.disturbed.soils..LUC.emis-sions.vary.substantially.with.time.and.emission.flows.are.converted.to.LUC.carbon.intensity.using.a.time.accounting.method..Large.initial.releases.of.GHGs.from.clearing.native.vegetation.are.followed.by.slower.releases.from.below-ground.materials..The.time-varying.emission.flows.are.converted.to.a.LUC.carbon.intensity.value.using.a.time.accounting.model.

.CARB.has.established.two.main.approaches.for.determining.the.CI.of.fuels.under.the.LCFS,.

both.of.which.consider.ILUC.impacts...The.first.method.is.CARB.“lookup.tables”.which.include.carbon.intensity.values.for.fuels.as.determined.by.the.agency.using.its.California-modified.GREET.model.(with.LUC.modifiers.when.applicable)...The.other.is.“customized.lookup.tables”.by.which.regulated.parties.may.propose.modifications.to.California-GREET.model.inputs,.including.new.fuel.pathways,.to.determine.fuel.specific.carbon.intensity.values...The.customized.approach.must.be.approved.by.CARB.and.meet.necessary.scientific.criteria.

Conclusion

As.noted.previously,.there.are.no.existing.internationally.agreed.methodologies.or.policy.struc-tures.for.dealing.with.ILUC.impacts.on.GHG.emissions.from.biofuels.production.and.use...The.need.to.improve.datasets.and.modelling.systems.to.more.reliable.determine.ILUC.and.sustain-ability.is.recognized.and.work.continues.to.effect.these.improvements...A.global.consensus.on.certification.and.sustainability.criteria.for.biofuels.would.address.many.issues.related.to.ILUC...



Other.regions.and.countries.are.beginning.to.consider.ILUC.impacts.within.their.own.biofuels.polices.either.already.implemented.or.under.development...For.the.most.part,.none.of.these.countries.has.established.specific.legislative.or.regulatory.requirements.to.include.sustainability.criteria.and.ILUC.impacts.within.their.biofuels.programs...China,.India,.Malaysia.and.Philippines.have.established.land.use-related.policies.(detailed.in.Section.7).that.provide.guidance.on.how.their.lands.can.be.developed.for.biofuel.feedstock.production,.however.these.guidances.are.not.build.in.relation.to.ILUC.for.biofuels.use...As.the.expansion.of.formal.legislative.and.regulatory.programs.on.biofuels.production.and.use.occurs,.more.of.these.countries.will.incorporate.ILUC.impacts.into.their.policy.determinations.and.GHG.emissions.

7. oTHer polICy approaCHes THaT aDDress bIofuels IluC ConCernsAs.noted,.policies.that.serve.to.address.ILUC.concerns.are.being.or.have.been.included.in.bio-fuels.policies.in.the.U.S..and.the.EU...Other.countries.have.already.taken.or.are.taking.different.approaches.that.focus.on.land.use.management.and.promoting.or.requiring.best.agricultural.prac-tices...As.noted,.a.number.of.countries.have.instituted.specific.land.management.policies.to.help.ensure.that.biofuel.development.takes.place.on.land.which.will.not.impact.on.biodiversity,.social.and.economic.needs,.soil.erosion,.water.conservation,.labour.rights.and.land.rights...Moreover,.governments.have.also.taken.steps.to.promote.best.agricultural.practices.which.are.environ-mentally.sustainable.as.well.as.socially.accepted.and.promote.an.efficient.use.of.energy.should.negate.the.need.for.an.ILUC.factor..Best.agricultural.practices.would.include.such.practices.as.no-till.farming,.improving.integration.between.agriculture.and.cattle.operations,.and.phasing.out.pre-harvest.field.burning,.which.is.currently.practiced.in.some.sugar.cane.growing.countries...

This.section.provides.examples.of.such.policies.set.in.countries.such.as.Brazil,.China,.India,.Ma-laysia.and.the.Philippines...For.these.countries,.biofuels.are.not.only.seen.as.a.means.to.reduce.en-ergy.dependence,.but.as.a.key.mechanism.to.improve.farmers’.income.and.in.some.cases,.improve.remote.communities’.access.to.liquid.fuels...While.it.is.true.that.the.setting.of.a.particular.policy.is.much.different.than.ensuring.that.policy.is.implemented.through.an.appropriate.monitoring.and/or.enforcement.scheme,.it.is.important.to.note.that.countries.are.recognizing.that.there.may.be.LUC.issues.related.to.biofuels.production.and.use.and.that.they.are.taking.steps.to.address.those.issues...Many.of.these.countries.began.addressing.these.issues.before.biofuels.ILUC.came.to.the.fore.

At.the.outset,.consider.that.there.is.a.very.different.concept.of.land.use.between.the.western.context.and.Asian.context..In.the.Asian.context,.any.land.that.is.not.used.for.food.plantations.will.be.considered.as.“safe”.land.to.be.used.for.biofuels..Although.there.is.often.no.clear.policy.by.Asian.governments.on.their.land.use.policies.for.biofuels,.the.Asian.countries.do.not.intend.to.use.land.that.is.still.suitable.for.agricultural.use.to.be.converted.to.producing.crops.for.fuel...Many.stakeholders.in.Asia.have.difficulty.accepting.the.concept.of.ILUC.as.they.are.dealing.with.very.high.population.increase.rate..Hence.they.will.use.any.land.they.have.for.human.settlement.and.food.production.which.in.the.end.contribute.to.the.clearing.of.forests.and.peat.lands.

brazil

Brazilian.President.Lula.announced.a.proposal.in.September.2009.to.ensure.sustainable.expan-sion.of.sugar.cane.harvesting.in.Brazil.while.addressing.sustainability.and.ILUC.issues.in.the.Bra-zilian.sugar.cane.industry..In.addition,.the.Brazilian.Research.Center.for.Agriculture.(EMBRAPA).took.over.coordination.of.the.Agro-Ecologic.Zoning.Program.for.sugar.cane.nationally...The.results.of.the.Zoning.Program.should.be.used.as.guidelines.for.licensing.and.financing.decisions..The.following.aspects.of.the.program.are.being.considered.in.order.to.define.adequate.areas:.

n. Soil.and.weather.adequacy;.n. Topography;.



n. Water.availability;.n. Water.requirements;.n. Sugarcane.cannot.be.planted.in.areas.with.sensible.ecosystems;.n. Areas.where.other.crops.have.been.produced..

Approximately.35.Mha.would.be.declared.adequate.for.sugar.cane.cropping..These.areas.are.highly.concentrated.in.the.states.where.most.sugar.cane.production.already.occurs,.for.example.the.states.of.São.Paulo,.Paraná.and.Minas.Gerais...Another.such.program.adopted.in.Brazil.is.the.Verified.Sustainable.Ethanol.Initiative..In.May.2008,.the.Swedish.company.SEKAB.together.with.Brazilian.ethanol.producers.developed.this.program.and.verified.and.traceable.ethanol.has.been.available.in.Sweden.since.August.2008..The.sustainability.criteria.put.in.place.to.meet.EU.and.Swedish.National.law.include,.among.other.things,.a.specific.provision.concerning.zero.tolerance.for.felling.rainforest.and.continuous.monitoring.provisions.

The.Green.Protocol.of.the.State.of.São.Paulo.in.2007.establishes.an.early.phase-out.of.sugar.cane.pre-harvest.field.burning.(an.old.practice.utilized.to.facilitate.the.manual.sugar.cane.cutting):.from.2012.to.2014.for.mechanized.areas.and.from.2013.to.2017.for.steeper.slopes..This.protocol.is.a.voluntary.scheme.with.the.goal.of.promoting.best.practices.within.the.sugar.cane.industry..The.São.Paulo’s.government.future.target.is.to.issue.a.Certificate.of.Conformity.to.producers.adhering.to.this.program...

According.to.the.Association.of.Sugarcane.Producers.(UNICA),.the.elimination.of.straw.burn-ing.will.help.reduce.CO2.emissions.in.8.5.million.tons.over.the.10-year.period.that.the.protocol.is.scheduled.to.last..It.is.important.to.note.that.more.than.150.mills.(approximately.85%.of.produc-ers).and.13,000.suppliers.have.already.committed.to.meet.the.goals.established.by.the.protocol..Mechanized.areas. in. the.state. increased.from.34%.in.2007.to.53.8%.during. the.2009-2010.harvest,.scheduled.to.end.in.May.2010..That.means.that.more.than.half.of.the.cane.harvested.in.Brazil.takes.place.without.burning..By.the.2010-2011.harvest,.the.state.government.expects.to.reach.70%.of.conformity....

In.addition,.there.other.initiatives.currently.being.undertaken.in.Brazil.to.promote.best.agricul-tural.practices,.which.are.part.of.the.Agro-Environmental.Protocol,.such.as.protection.of.riparian.forests.in.sugar.cane.areas,.soil.conservation,.implementation.of.water.conservation.programs,.and.recycling.of.solid.wastes.among.others...Following.the.Green.Protocol.adopted.by.São.Paulo,.there.are.current.discussions.among.other.producing.states,.which.are.also.willing.to.phase.out.sugar.cane.field.burning.before.harvesting.in.their.regions...

China

In.China,.the.Ministry.of.Agriculture.in.2007.released.an.Agricultural.Biofuel.Industry.Plan.(2007-2015),.which.aims.to.develop.a.number.of.new.crop.bases.by.2010.to.provide.sufficient.biomass.resources.to.meet.the.country’s.growing.demand.for.ethanol.and.biodiesel..The.plan.expected.the.new.crop.bases.to.mostly.grow.non-grain.feedstock.such.as.sugar.cane,.sweet.sorghum,.cassava.and.sweet.potatoes.as.feedstock.for.ethanol.production.since.they.can.be.grown.on.non-arable.land..Sweet.sorghum.was.recommended.to.be.cultivated.on.10.million.hectares.of.unused.saline.land.located.in.the.provinces.of.Heilongjiang,.Shandong,.Inner.Mongolia,.Xinjiang.and.Hebei..The.plan.estimated.that.an.additional.13.million.hectares.of.unused.land.is.suitable.for.developing.new.cassava.plantations.in.the.provinces.of.Guangxi,.Guangdong,.Hainan,.Fujian.and.Yunnan..The.plan.also.recommended.the.expansion.of.sweet.potato.plantations.in.the.provinces.of.Guangxi,.Chongqing.and.Sichuan.

Some.governments.have.put.into.place.specific.policies.requiring.or.promoting.the.use.of.the.use.of.idle,.degraded,.marginal,.and/or.waste.land...Again,.however,.note.there.are.no.commonly.



accepted.definitions.of.these.terms...Nevertheless,.the.Chinese.government.have.taken.steps.in.this.area...China’s.land.use.policy.restricts.biofuels.production.on.crop.land,.and.focuses.on.mar-ginal.or.wasteland.for.growing.feedstocks.for.producing.bioethanol.and.biodiesel..For.instance,.in.Southwest.China,.provincial.governments.have.plans.to.plant.jatropha.on.“barren.land”,.i.e.,.land.that.is.not.suitable.for.agricultural.use,.in.provinces.such.as.Sichuan,.Guizhou.and.Yunnan..The.governments.own.some.barren.land.which.would.be.managed.by.government.agencies.if.put.to.use;.a.significant.amount.of.barren.land.is.owned.by.village.collectives,.with.use.rights.granted.to.individual.households..In.China,.there.are.nearly.0.1.billion.ha.of.marginal.lands.including.saline,.sandy,.mining.lands,.etc.,.which.can.be.used.to.plant.energy.crops.

India

India.has.also.taken.steps.in.this.area...The.National.Policy.on.Biofuels.was.announced.in.Septem-ber.2008.which.was.subsequently.approved.in.December.2009..The.policy.aims.to.facilitate.and.bring.about.optimal.development.and.utilization.of.indigenous.biomass.feedstocks.for.production.of.biofuels..The.government’s.approach.to.biofuels.is.based.solely.on.non-food.feedstocks.to.be.raised.on.degraded.or.wastelands.that.are.not.suited.to.agriculture..The.focus.for.the.develop-ment.of.biofuels.in.India.will.be.to.utilize.waste.and.degraded.forest.and.non-forest.lands.only.for.cultivation.of.shrubs.and.trees.bearing.non-edible.oilseeds.for.production.of.biodiesel.

Plantations.of.trees.bearing.non-edible.oilseeds.in.India.will.be.taken.up.on.government/com-munity.wasteland,.degraded.or.fallow.land.in.forest.and.non-forest.areas..Contract.farming.on.private.wasteland.could.also.be.taken.up.and.plantations.on.agricultural.lands.will.be.discouraged..In.all.cases.pertaining.to.land.use.for.the.plantations,.consultations.would.be.undertaken.with.the.local.communities.through.Gram.Panchayats/Gram.Sabhas,.and.with.Intermediate.Panchayats.and.District.Panchayat.where.plantations.of.non-edible.oilseed.bearing.trees.and.shrubs.are.spread.over.more.than.one.village.or.more.than.one.block..State.governments.would.also.be.required.to.decide.on.land.use.for.plantation.of.non-edible.oilseed.bearing.plants.or.other.feedstocks.of.biofuels,.and.on.allotment.of.government.wasteland,.degraded.land.for.raising.such.plantations..

Jatropha.is.one.of.the.most.popular.non-edible.oilseeds.used.for.biodiesel.production.in.India..As.India.has.nearly.60.million.hectares.of.wasteland,.the.government.has.indicated.that.about.30.million.hectares.could.be.made.available.for.plantations.with.an.aim.to.producing.a.minimum.of.2.tons.(8,602.gallons).of.biodiesel.per.year.per.hectare..This.can.be.achieved.through.research.on.improving.the.productivity.of.jatropha.oilseeds,.mastering.extraction.and.esterification.technol-ogy,.and.finding.profitable.by.products..According.to.the.Ministry.of.New.and.Renewable.Energy,.930,000.ha.of.wastelands.were.covered.with.jatropha.and.pongamia.plantations.in.eight.states.as.of.February.2010.

Access.to.land.is.a.fundamental.importance.in.India.especially.in.rural.areas..It.remains.the.principal.determinant.of.rural.income.distribution..In.the.Indian.context,.in.which.a.large.and.rising.share.of.the.rural.poor.derive.livelihoods.principally.from.their.own.labour,.a.powerful.case.can.be.made.in.favour.of.more.equitable.land.distribution.on.the.grounds.that.such.a.strategy.would.generate.more.employment.than.the.alternative..In.general,.with.the.main.objectives.being.to.reduce.poverty,.raising.agricultural.productivity.and.promoting.social.inclusion,.there.are.strong.arguments.for.seeking.ways.to.improve.access.to.land.for.the.poor.and.other.socially.excluded.groups.in.rural.India1..This.will.“eliminate”.the.need.to.follow.ILUC.concept.

malaysia

The.government.of.Malaysia.has.set.a.combination.of.policies.described.above.that.attempt.to.address.sustainability.concerns,.including.biofuels.LUC,.though.there.has.been.criticism.of.the..

1 T. Haque, national Centre for agricultural economics and policy research, “land use planning in India – retrospect and prospect.”



government’s. lax.enforcement.of. these.policies..There. is.already.a. legislation.regulating.the.sustainable.development.of.the.palm.oil.industry.including.the.Land.Acquisition.Act.1960,.Land.Conservation.Act.1960.(revised.in.1989).and.National.Land.Code.1965,.Quality.Act.1974.(Environ-mental.Quality).(Prescribed.Premises).(Crude.Palm.Oil).Regulation.1977...

The.government.has.set.a.number.of.new.initiatives.to.ensure.sustainability.and.competitive-ness.of.the.oil.palm.industry..In.August.2007,.the.Ministry.of.Plantation,.Industries.and.Com-modities.launched.the.“Codes.of.Practices.&.Sustainability.Manual.”..In.addition.to.preparing.a.sustainability.manual.for.the.oil.palm.industry,.the.following.five.codes.of.practices.were.set:

n. Good.agricultural.practice.for.oil.palm.estates.and.smallholdings;.n. Good.milling.practice.for.palm.oil.mills;n. Good.crushing.practice.for.palm.kernel.crushers;.n. Good.refining.practice.for.palm.oil.refineries;n. Good.practice.for.the.handling,.transport.and.storage.of.products.from.the.oil.palm.

According.to.the.Malaysian.Palm.Oil.Council.(MPOC),.the.Malaysian.palm.oil.industry.is.sup-portive.of.addressing.biofuels.ILUC,.but.remains.concerned.about.the.issues.such.as.the.method-ologies.to.analyse.ILUC.and.the.potential.impact.to.developing.rural.economies...Though.a.diverse.group.of.stakeholders.have.formed.the.Roundtable.on.Sustainable.Palm.Oil.(RSPO).and.adopted.“Principles.and.Criteria.for.Sustainable.Palm.Oil.Production”.which.in.part.addresses.biofuels.ILUC.concerns,.there.has.been.public.criticism.of.the.lack.of.“teeth”.in.the.RSPO.principles.

The philippines

The.Biofuels.Act.of.2006.(Republic.Act.9637).was.formally.signed.into.law.on.Jan..17,.2007...The.enactment.of.the.Biofuels.Act,.which.mandates.the.utilization.of.idle.lands.for.feedstock.production.in.the.Philippines,.led.to.the.commissioning.of.the.Department.of.Agriculture.to.formulate.the.Bio-fuels.Feedstock.Program..It.has.two.subprograms.including.the.Biodiesel.Feedstock.Program.and.the.Bioethanol.Feedstock.Program,.with.implementation.targeted.within.five.years.starting.in.2007..

Through.the.Philippine.Agricultural.Development.and.Commercial.Corporation.(PADCC),.the.Department.of.Agriculture.provides.information.on.assistance.in.selecting.ideal.investment.loca-tions;.joint.venture.matching;.and.facilitation.of.surveys,.permits,.and.clearances.to.biofuel.inves-tors..As.of.2008,.49.biofuel.projects.generated.a.total.of.11,539.ha.planted.with.various.crops.(8,887.ha.for.biodiesel.and.2,652.ha.for.bioethanol)..The.program.supports.feedstock.production.through.R&D.such.as.varietal.improvement.of.potential.feedstock.sources.including.seed.produc-tion,.planting.materials,.plantation.development.and.postharvest.technologies.

In.December.2008,.a.Joint.Administrative.Order.(JAO).No..2008-1.was.signed.by.various.Philip-pine.government.agencies.on.the.“Guidelines.Governing.the.Biofuel.Feedstocks.Production,.and.Biofuels.and.Biofuel.Blends.Production,.Distribution.and.Sale.under.Republic.Act.No..9637.”.Also.known.as.the.Omnibus.Guidelines.on.Biofuels,.they.basically.provide.guidance.on.screening.and.processing.applications.for.certifications,.licenses.and.permits.to.operate.as.a.biofuel.feedstock.producer,.biofuel.and.biofuel.blend.producer,.distributor.and.reseller..One.of.the.land.use.guidelines.ensures.that.lands.devoted.to.food.crops.shall.not.be.utilized.for.biofuel.feedstocks.production..

The.JAO.specifies.requirements.for.biofuel.feedstock.producers,.where.applicants.are.required.to.secure.certification.from.the.Department.of.Agriculture.that.the.feedstock.or.the.proposed.biofuel.feedstock.area.may.be.utilized.for.the.production.of.biofuel.feedstock..Certification.is.not.required.if.the.feedstock.to.be.used.(e.g..molasses).does.not.involve.land.utilization..The.following.are.the.criteria.for.the.issuance.of.certification:.

n. Cereals.that.can.be.used.both.for.food.and.for.biofuel.production.such.as,.but.not.limited.to,.maize.and.wheat.shall.not.be.used.for.biofuel.production;



n. The.land.to.be.used.shall.be.consistent.with.the.natural.expansion.of.the.municipality.or.lo-cality,.as.contained.in.the.approved.physical.framework.and.land.use.plan.by.the.concerned.municipality.or.locality;.

n. The.area.that.will.be.used.is.not.the.only.remaining.food.production.area.of.the.community;n. All.agricultural.areas.classified.hereunder.shall.not.be.utilized.for.biofuel.feedstock.production:

•. All.areas.covered.by.government-funded.irrigation.facilities,.either.national.agency.or.LGU,.designed.to.support.rice.and.other.crop.production,.and.all.irrigated.lands.where.water.is.not.available.for.rice.and.other.crop.production.but.are.within.areas.programmed.for.irrigation.facility.rehabilitation.by.the.department.of.agriculture.and.the.national.irriga-tion.administration.(NIA);

•. All.irrigable.lands.already.covered.by.irrigation.projects.with.firm.funding.commitments.as.certified.by.NIA.at.the.time.of.the.application.for.land.use.conversion;

•. All.privately.irrigated.alluvial.plain.lands.utilized.for.rice.and.maize.production;.and•. All.agricultural.lands.that.are.ecologically.fragile,.the.utilization.of.which.will.result.in.seri-

ous.environmental.degradation.

The.Department.of.Agriculture.has.listed.in.one.of.its.conditions.to.evaluate.that.the.areas.are.underutilized.and.marginal.before.issuing.the.certification..Independent.biofuel.feedstock.produc-ers.(i.e..has.no.marketing.or.supply.agreement.with.a.biofuel.producer).with.effective.areas.of.less.than.25.hectares.are.exempted.from.securing.the.certification..On.the.other.hand,.biofuel.producers.which.hold.agricultural.lands.as.biofuels.are.required.to.apply.to.the.Department.of.Agriculture’s.National.Technical.Committee.on.Land.Use.Matters.(NTECLUM).to.secure.the.Cer-tification.of.Eligibility.for.Reclassification.of.Agricultural.Lands.

Conclusion

A.number.of.countries.are.sensitive.to.biofuels.LUC...While.these.countries.have.not.followed.the.lead.of.the.U.S..and.EU.in.biofuels.ILUC.policy.setting,.these.countries.have.been.addressing.LUC.by.putting.into.place.legislation.and/or.regulations.that.require.specific.land.use.manage-ment.practices.for.biofuels.feedstocks...Moreover,.they.have.taken.steps.to.address.the.issue.by.promoting.and/or.requiring.best.agricultural.practice...Notably,.many.of.these.countries.began.to.consider.these.issues.before.they.became.a.popular.point.of.discussion.in.the.biofuels.realm.and.before.some.industry-lead.initiatives.gained.popularity.and.focus...Some.countries.have.put.into.place.ambitious.policies.in.this.area.but.effective.enforcement.of.these.policies.is.lacking.

We.note.also.that.a.number.of.voluntary.initiatives.have.emerged.in.addition.to.the.RSPO,.high-lighted.above...Many.of.the.sustainability.criteria.and.principles.contained.within.other.voluntary.initiatives.such.as.the.Roundtable.for.Sustainable.Biofuels.(RSB),.Roundtable.on.Responsible.Soy.Association.(RTRS),.Better.Sugar.Cane.Initiative.(BSI).include.concepts.that.in.effect.address.bio-fuels.LUC.as.well...However,.with.the.exception.of.the.BSI.none.of.the.schemes.have.addressed.directly.biofuels.ILUC,.preferring.instead.to.concentrate.among.other.things.on.best.practice.within.land.management,.biodiversity,.water.resources.and.human.social.and.economic.rights

The.BSI.has.applied.to.the.EU.Commission.for.voluntary.scheme.recognition..To.qualify.for.EU.recognition.under.RED.section.6,.the.basis.for.the.calculation.of.GHG.emissions.and.the.protec-tion.of.land.with.high.biodiversity.value.must.be.presented..Section.6.does.not.currently.allow.for.actual.values.to.be.used.when.calculating.the.greenhouse.gas.emissions.from.the.production.and.use.of.sugarcane.ethanol..This.may.be.changed.in.future.revisions..To.calculate.emissions.the.default.values.in.annex.V.of.the.RED.must.be.used..GHG.emissions.resulting.from.changes.in.land.carbon.stocks.must.be.added.to.the.default.values..

The.RSB.recognizes.the.effect.of.both.biofuels.DLUC.and.ILUC,.and.Principle.3.of.the.standard.–.Greenhouse.Gas.Emissions.–.makes.reference.to.this.when.calculating.the.lifecycle.GHG.emis-sions.of.the.feedstock.or.biofuel..In.June.2010.at.a.RSB.workshop.held.in.Rio.de.Janeiro.it.was.



agreed.by.the.majority.of.participants.that.the.RSB.should.continue.to.review.indirect.impacts.of.biofuels,.however.no.consensus.was.reached.as.to.how.this.should.be.reflected.in.its.Standards..When.discussing.indirect.impacts.at.the.project.level,.the.majority.opinion.was.that.an.ILUC.factor.was.not.a.good.option.and.that.more.emphasis.should.be.placed.on.“qualitative.approaches”..It.was.suggested.that.a.differentiation.be.made.among.feedstocks.based.on.regional.differences.and.that.feedstocks.be.classified.according.to.their.risk.level.for.indirect.impacts.

8. IluC anD poTenTIal ImplICaTIons for THe emergIng global bIofuels marKeT

Biofuels.supply.and.demand.is.expected.to.grow.in.the.coming.years...By.2020,.total.demand.for.biofuels.in.the.four.major.producing.and.consuming.regions.of.North.America,.Latin.America.&.Caribbean,.EU.and.Asia-Pacific.may.reach.249.4.billion.liters.(65.8.billion.gallons)..Ethanol.demand.will.represent.the.overwhelming.majority.of.this.demand.at.73%,.representing.184.billion.liters.(48.6.billion.gallons).and.may.represent.13%.by.volume.of.the.global.gasoline.pool.by.2020.(Hart.2010)...Biodiesel.demand.will.continue.to.increase,.but.more.modestly,.representing.6%.of.the.on-road.diesel.pool.comprising.the.aforementioned.four.regions,.or.65.3.billion.liters.(17.25.billion.gallons),.by.2020.(Hart.2010)...Africa.is.expected.to.contribute.very.modestly.to.both.biofuels.supply.and.demand.through.this.time.period.

The.effect.of.ILUC.on.the.emerging.global.biofuels.market.is.potentially.expected.to.be.two-fold:.first.as.ILUC.policies.may.prevent.the.use.of.some.feedstocks.in.large.markets.and..demand.for.other,.more.sustainable.biofuels.will.rise...The.biofuels.that.are.linked.to.ILUC.concerns.may.find.markets.in.other.countries.that.are.now.only.starting.their.biofuels.policies.but.are.not.as.concerned.by.biofuels.ILUC.issues...More.than.39.countries.either.have.or.are.scheduled.to.imple-ment.biofuels.mandates.in.2010.and.the.majority.of.those.are.in.developing.countries.which.have.not.expressed.concerns.about.biofuels.ILUC...This.section.will.first.review.the.expected.supply.and.demand.of.ethanol.and.biodiesel.until.2020.with.some.ILUC.considerations,.and.then,.the.impact.of.ILUC.on.the.expected.biofuels.trade.flows.both.to.countries.which.have.ILUC.policies.in.place,.and.those.which.do.not..

ethanol outlook to 2020

Ethanol.is.the.main.biofuel.currently.used.worldwide.with.the.two.main.producers.and.consumers.being.Brazil.and.the.U.S...Ethanol.is.expected.to.remain.the.main.biofuel.used.and.the.main.sup-plier.of.ethanol.on.the.international.market.until.2020.is.expected.to.be.Brazil.by.an.overwhelm-ing.margin...The.main.parameter.expected.to.affect.ethanol.trade.flows.in.the.near.future.is.the.sustainability.criteria.that.have.been.used.in.biofuels.policies.in.the.U.S..(RFS2).and.California.(LCFS).and.in.the.EU.(RED.and.FQD)...By.attributing.high.GHG-saving.potential.to.Brazilian.etha-nol.specifically,.these.policies.are.expected.to.create.high.demand.for.this.product,.which.in.turn.could.affect.other.ethanol.and.sugar-producing.countries,.thus.leading.to.potential.ILUC.concerns...The.analysis.hereafter.shows.the.expected.trends.in.the.ethanol.market.worldwide.considering.four.main.biofuel-producing.regions:.Asia.Pacific,.EU27,.Latin.America.and.North.America..Ethanol.supply.and.demand.projection.until.2015.by.region.is.presented.in.Figure.5...It.shows.that.the.Western.Hemisphere,.lead.by.the.U.S..and.Brazil,.will.continue.to.represent.about.86%.of.global.ethanol.production.and.nearly.80%.of.consumption.through.2020.

As.figure.5.shows,.there.will.be.some.supply.growth.in.the.Asia-Pacific.region.by.2020,.which.will.represent.10%.of.global.ethanol.production.by.then...EU-27.supply.growth.over.by.2020.is.quite.modest.as.traditionally.only.50%.of.capacity.has.been.used.and.is.reported.in.this.forecast..On.the.demand.side,.the.EU.currently.imports.around.1.5.billion.litres.of.ethanol.mainly.from.Brazil.(2009.and.2010)..This.figure.is.expected.to.double.by.2020.to.nearly.4.billion.litres..



On.the.supply.side,.ethanol.is.expected.to.be.only.first.generation.ethanol.until.at.least.2015,.in.spite.of.research.efforts.and.funds.being.allocated.to.cellulosic.ethanol.so.as.to.allow.the.use.on.non-food,.non-ILUC.and.high.GHG.emission.savings.ethanol.(Hart.2009)...Cellulosic.ethanol.proj-ects.are.not.expected.to.produce.large.enough.commercial.volumes.by.2015.to.satisfy.require-ments.in.countries.such.as.the.U.S..This.is.one.of.the.main.drivers.for.Brazilian.ethanol.imports,.as.the.GHG.saving.potential.associated.with.it.is.high.and.Brazilian.ethanol.is.even.considered.an.advanced.biofuel.in.the.U.S..under.the.RFS2.program...Demand.for.Brazilian.ethanol.is.expected.to.grow.substantially.in.the.U.S..and.in.particular.in.the.state.of.California..

Essentially,.sugar.cane.ethanol.from.Brazil.is.the.only.commercially.available,.economical.bio-fuel.available.to.meet.RFS2.advanced.biofuel.requirements..In.California,.it.has.been.estimated.that.at.least.50%.of.the.state’s.ethanol.demand.could.be.satisfied.with.Brazilian.ethanol.(Hart.2009)..The.growth.in.sugarcane.ethanol.demand.is.directly.due.to.the.LCFS.which.takes.effect.in.2011..Total.Brazilian.ethanol.demand.in.the.U.S..could.reach.5.7.billion.litres.(1.5.billion.gallons).by.2015..By.2020,.Brazil.will.be.in.position.to.export.a.minimum.11.billion.litres.(approximately.3.billion.gallons).to.the.world.market,.in.particular,.the.U.S.,.Europe,.Japan.and.possibly.China...Meantime,.internal.ethanol.demand.in.Brazil.is.expected.to.continue.to.climb.as.well.

biodiesel outlook to 2020

Biodiesel.is.a.distant.second.after.ethanol.in.terms.of.global.biofuels.supply.and.demand..Never-theless,.palm.oil.cultivation.in.South.East.Asia.linked.to.biodiesel.production.has.helped.to.trigger.the.debate.on.ILUC.when.it.was.shown.that.new.plantations.were.started.on.cleared.tropical.forest.land.even.if.forest.clearing.has.been.mainly.linked.to.timber.production...A.similar.situation.has.been.found.in.Latin.America,.in.particular.in.Brazil,.where.it.was.charged.that.soy.oil.planta-tions.were.encroaching.on.the.Amazon.forest.and.then.led.to.the.soy.moratorium.in.Brazil...As.a.result,.an.ILUC.factor.in.biofuels.policies.around.the.world.may.well.affect.biodiesel.feedstocks.and.the.biodiesel.market.perhaps.more.than.it.is.expected.to.affect.the.ethanol.market..

Figure.6.shows.the.expected.biodiesel.market.evolution.until.2020.in.four.regions:.Asia.Pacific,.EU27,.Latin.America.and.North.America..The.analysis.does.not.take.directly.ILUC.into.consideration.and.the.impact.of.ILUC.is.discussed.following.the.business.as.usual.case.presented.hereafter.

figure 5: ethanol supply and Demand by region, 2010-2020 (Hart 2010).

-10,000.0020,000.0030,000.0040,000.0050,000.0060,000.0070,000.0080,000.0090,000.00

Supply Demand Supply Demand Supply Demand Supply Demand

Asia Pacific EU 27 Latin America North America

Mill

ion

Lite

rs

2010 2015 2020



-

5,000

10,000

15,000

20,000

25,000

30,000

Supply Demand Supply Demand Supply Demand

2010 2015 2020

Mill

ion

Lite

rs

Asia Pacific EU 27 Latin America North America

figure 6: biodiesel supply and Demand by region, 2010-2020 (Hart 2010).

As.can.be.seen.in.Figure.6,.with.respect.to.biodiesel,.Europe.currently.dominates.consumption.representing.about.61%.of.global.consumption.in.2010..The.region.also.represents.50%.of.sup-ply...However,.significant.growth.in.supply.and.demand.is.expected.to.come.from.the.Asia-Pacific.and.Latin.American.regions..Combined,.these.two.regions.are.projected.to.overtake.Europe.by.2020.and.represent.about.51%.of.global.biodiesel.demand...

For.2010.and.even.2015,.the.increase.in.capacity.will.lead.to.similar.utilization.rates.even.if.con-sumption.actually.increases.because.of.higher.mandate.levels..The.EU.relies.mainly.on.rapeseed.as.biodiesel.feedstock,.although.high.prices.have.led.the.region.to.look.at.cheaper.oils.such.as.soy.and.palm.oils.as.biodiesel.feedstocks..Should.the.RED.include.an.ILUC.factor.it.would.therefore.affect.the.potential.of.the.region.to.import.these.oils.or.biodiesel.

Global.biodiesel.supply.will.have.to.double.over.the.2010-2020.timeframe.to.accommodate.de-mand.requirements.that.governments.around.the.world.are.aiming.to.implement..With.biodiesel.overcapacity.an.issue.globally,.producers.in.other.countries.complaining.about.cheap.imports.and.with.policies.structured.that.tend.to.disfavor.imports.altogether,.many.countries.will.focus.on.their.own.internal.markets..For.example,.the.governments.of.Brazil.and.Argentina.are.likely.to.increase.biodiesel.blending.limits.to.absorb.excess.capacity.and.will.supply.their.respective.internal.mar-kets...Many.of.these.countries.do.not.address.biofuels.ILUC.in.their.biodiesel.policies.at.this.time...

As.previously.discussed,.palm.oil.is.the.feedstock.most.closely.associated.with.potential.ILUC.issues..Recent.studies.give.ILUC.values.for.palm.oil.of.74.kg/GJ.to.153.kg/GJ.for.20.years.of.depreciation,.compared.to.lower.or.negative.values.for.rapeseed,.wheat,.corn.or.sugar.beet..Soy.however.has.been.attributed.a.very.high.ILUC.factor.in.one.study.of.166.kg/GJ..The.ILUC.values.should.not.hide.the.fact.that.palm.is.a.very.efficient.plant.with.a.very.high.oil.yield..Should.ILUC.factors.lead.palm.oil.and.palm.oil.based.biodiesel.from.Indonesia.and.Malaysia.to.fail.the.EU.and.U.S..sustainability.criteria.after.2011,.then.the.2015.biodiesel.supply.and.demand.scenario.would.be.severely.affected..By.then,.potentially.20.1.billion.litres.(5.3.billion.gallons).oversupply.of.biodiesel.from.Indonesia.and.Malaysia.would.be.without.value.for.the.EU.and.U.S..biofuels.targets..As.mentioned.earlier,.the.U.S..is.not.expected.to.need.large.quantities.of.feedstock.or.biodiesel.imports.from.outside.since.the.soybean.biodiesel.GHG.factor.has.been.found.to.meet.the.minimum.GHG.criteria.under.the.RFS2.program..

In.the.EU,.the.expected.biodiesel.demand.in.2015.is.close.to.18.8.billion.litres.(5.billion.gallons).and.the.EU.biodiesel.capacity.should.exceed.that.demand.at.26.5.billion.litres.(7.billion.gallons)..In.


37Hart Energy Consulting | CABI | October 2010

spite.of.the.fact.that.the.EU.has.enough.capacity.to.meet.its.demand,.biodiesel.is.imported.into.the.EU..Biodiesel.from.the.U.S.,.Argentina.and.South.East.Asia.has.been.imported.into.Europe.due.to.economic.considerations.as.local.rapeseed.oil.or.rapeseed.biodiesel.was.more.expensive.than.imports..By.2015.supply.of.biodiesel.from.the.EU.should.be.around.15.billion.litres.(4.billion.gallons).therefore.leading.to.3.8.billion.litres.(1.billion.gallon).of.imports..However.by.2015.the.38%.GHG.saving.default.value.achieved.by.rapeseed.biodiesel.will.be.struggling.to.meet.the.2017.target.of.50%.minimum.GHG.reduction.under.the.RED.unless.the.value.has.been.improved.through.advances.in.rapeseed.LCA.or.the.FAME.from.rapeseed.production.process..

The.EU.biodiesel.producers.could.therefore.have.to.look.at.alternative.feedstocks..However.as.the.GHG.saving.default.values.stand.now,.both.palm.oil.and.soybean.oil.appear.to.have.worse.GHG.savings.than.rapeseed.oil,.unless.there.is.methane.capture.at.the.oil.mill.in.the.case.of.palm.oil..The.fact.that.the.palm.oil.GHG.saving.factor.has.been.revised.in.the.U.S..could.lead.to.a.revision.in.the.EU.too..Considering.the.existing.GHG.saving.factors,.the.potential.biodiesel.feedstocks.meeting.the.50%.cut.would.be.sunflower.oil,.palm.oil.with.methane.capture.at.the.oil.mill.and.tallow.or.other.wastes..The.fact.that.palm.oil.could.face.ILUC.issues.and.not.be.available.to.the.EU.could.therefore.severely.affect.the.potential.of.the.EU.to.meet.its.biofuels.mandate.under.the.RED.

A.side.effect.of.the.ILUC.factor.preventing.or.limiting.palm.oil.from.being.used.in.the.EU.bi-odiesel.industry.could.be.the.increase.in.the.use.of.ethanol.in.the.EU..As.the.mandate.for.biofuels.would.still.be.in.place.for.2020.Member.States.could.meet.their.obligation.with.more.ethanol.and.less.biodiesel..This.in.turn.would.put.pressure.on.the.ethanol.producing.countries.and.could.potentially.lead.to.ILUC.in.ethanol.exporting.countries...In.addition,.Hart.sees.as.highly.probable.the.creation.of.a.biofuels.market.between.developing.countries,.thus.by-passing.the.EU.and.U.S..where.ILUC.factors.would.be.implemented..Palm.biodiesel.from.Malaysia.and.Indonesia.could.be.used.in.the.countries.where.it.is.produced,.with.no.ILUC.limitation,.but.could.also.be.exported.to.other.large.markets.where.there.are.no.ILUC.considerations.such.as.China..In.that.case,.the.introduction.of.ILUC.factors.in.the.EU.and.U.S..would.fail.to.meet.its.purpose.

Another.region.which.could.be.affected.by.the.introduction.of.ILUC.factors.applied.to.biofuels.is.Africa..There.are.for.now.over.27.African.countries.where.biofuels.projects.have.been.launched.or.announced.and.the.targets.are.both.the.internal.and.exports.markets.as.shown.in.Figure.7..The.countries.that.plan.on.exporting.biofuels.are.generally.looking.at.the.EU.as.an.export.market..

figure 7: biofuels projects in africa (Hart 2010).



This.is.because.of.historical.links.as.well.as.tax.benefits..The.restriction.of.exports.in.other.biofuel.producing.regions.could.potentially.affect.biofuels.projects.in.Africa.by.creating.more.demand.for.biofuels.from.the.region..However.there.are.also.reports.of.unsustainable.land.developments.associated.with.biofuels.plantations.in.Africa.and.ILUC.issues.too..It.is.therefore.quite.unsure.whether.the.continent.would.be.able.to.supply.the.shortfall.of.biodiesel.demand.or.extra.etha-nol.demand.from.the.EU.should.other.regions.be.unsuitable.feedstock.providers.due.to.ILUC.concerns..As.in.Asia,.African.countries.could.look.for.other.biofuels.markets.where.to.sell.their.production,.thus.bypassing.ILUC.issues.

9. ConClusIon: balanCIng THe rIsKs anD unCerTaInTIesIt. is.clear. from.this. review.that.multiple.uncertainties.exist.about.a.wide. range.of. factors. in.assessing.biofuels.ILUC:.true.land.availability,.yields,.GHG.savings,.net.energy.savings,.direct.environmental.effects.and.potential.market.impacts.and.unintended.consequences.of.biofuels.ILUC.penalties.or.factors...All.these.affect.the.amount.of.DLUC.and.ILUC.and.make.accurate.projections.extremely.unlikely.and.hence.any.economic.decisions.extremely.risky..Permutations.and.combinations.of.LUC.are.endless.and.their.drivers.are.many.and.interrelated...Given.high.uncertainty,.there.is.much.variation.in.outputs.between.different.models.due.to.errors.and.dif-ferences.in.input.data,.digital.maps.and.remote.sensing.interpretation.and.how.well.algorithms.included.in.the.model.express.important.processes.and.simulate.dominant.LUC..There.is.even.

general.uncertainty.in.predicting.future.LUC.decisions.involving.human.free.will.and.behaviour..Lohmann.(2006).raised.some.important.points.about.risk.and.uncertainty.by.recalling.the.seminal.

work.of.the.great.20th.century.economist.Frank.Knight’s.Risk, Uncertainty and Profit.(1921)..Knight.is.famous.for.his.distinction.between.risk.and.uncertainty,.which.Lohmann.expands.as.follows:

Risk.in.Knight’s.sense.refers.to.situations.where.the.probability.is.well.known,.e.g..flipping.a.coin..Such.known.risk.factors.in.biofuels,.we.suggest.are.currently.few.

Uncertainty.is.different:.you.know.the.things.that.can.go.wrong,.but.cannot.calculate.the.prob-ability,.e.g..the.effects.of.weather.on.yields.over.the.next.few.years.

Ignorance.is.again.different:.these.are.the.unknown.unknowns,.and.ILUC.is.a.case.in.point,.of.something.that.was.largely.unknown.and.is.now.perhaps.in.the.process.of.becoming.“uncertain”.

Finally.there.is.indeterminacy.where.the.probability.of.a.result.cannot.be.calculated.because.it.is.not.a.matter.of.science,.modelling.and.prediction,.but.of.decision..Hence.future.political.decisions.cannot.be.easily.guessed.and.so.not.factored.into.calculations..Currently.this.is.a.major.problem.for.the.private.sector,.which.requires.clear.signals.about.government.direction.on.climate.change,.carbon.prices.and.much.else,.in.order.to.make.important.investment.decisions..In.such.cases,.Lohmann.suggests.that.even.trying.to.assign.a.probability.to.an.outcome.can.affect.the.likelihood.of.the.outcome.itself...Risk.fits.easily.into.economic.thinking,.because.it.can.be.easily.measured..Uncertainty,.ignorance.and.indeterminacy.however.call.for.a.more.precautionary.and.flexible,.less.numerical.approach..To.date.in.the.case.of.biofuels,.the.subject.has.not.been.noted.for.a.precau-tionary.approach...Lohmann.cautions.that.by.mixing.up.the.analytically.distinct.concepts.outlined.above,.risks.blundering.into.what.Knight.would.call.a.‘fatal.ambiguity’.

The.complexities.of.biofuels.ILUC.can.be.appreciated.from.the.flow.diagram.(Figure.8).as.well.as.the.centrality.of.land.use.issues..To.each.of.the.boxes.can.or.should.be.attached.estimates.of.risk,.uncertainty.and.indeterminacy,.which.we.believe.are.largely.lacking.and.need.to.be.assessed.if.we.are.to.truly.assess.the.future.of.biofuels.and.their.indirect.effects..

Quite.simply,.the.policy.and.market.development.of.biofuels.have.proceeded.so.quickly.over.the.last.decade.that.the.science.needed.to.untangle.the.complexities.of.biofuels.ILUC.and.ad-dress.the.uncertainties.pointed.out.above.has.been.outpaced..Biofuels.will.be.an.important.tool.for.many.countries.as.they.begin.to.diversify.their.energy.portfolios.in.this.century.and.it.is.important.



to.note.that.not.all.biofuels.and.biofuels.feedstocks.are.created.equally...We.hope.that.the.many.uncertainties.raised.in.this.paper.do.not.detract.the.reader.from.contemplating.the.serious.issues.that.biofuels.LUC.present..The.switch.away.from.fossil.fuels.to.renewable.alternatives.will.have.unforeseen.consequences,.especially.for.highly.populated.resource-poor.countries.and.presently.the.role.of.biofuels.in.this.process.is.very.unclear.

We.end.this.review.with.a.list.of.knowledge.gaps.that.need.addressing.and.some.suggestions.for.stakeholders:

1..Moreexperimentationandmodelling:It.is.clear.that.there.are.several.aspects.of.biofuel.production.that.work.against.the.very.goals.policies.are.trying.to.achieve.–.reduction.of.GHGs.and.protection.of.scarce.and.valuable.natural.resources..These.need.to.be.very.carefully.elu-cidated.by.monitoring,.experimenting.and.modelling.in.many.locations.around.the.planet.

figure 8: analytical framework for the analysis of the cause and effect relations of land use competition (from rathmann et al 2010).




2..EstablishstandardmethodologiestoevaluateLUCfrombiofuels:It.is.very.clear.that.there.are.major.site-specific.effects.of.biofuel-related.agriculture.which.may.explain.some.of.the.differences.between.different.published.papers,.but.even.so,.the.extent.of.ranges.displayed.(Figure.9).suggests.major.methodological.differences..There.should.now.be.a.major.effort.to.establish.reliable.standard.methodologies.to.be.followed.at.the.experimental.and.pilot.scale.to.fully.evaluate.the.wide.range.of.effects,.direct.and.indirect,.that.ensue.from.growing.biofuels..This.would.enable.much.greater.confidence.when.comparing.future.studies.and.greatly.enable.decision.makers.to.make.more.informed.judgments..

3..Quantifyavailablemarginalland:Marginal,.abandoned,.degraded.and.unused.lands.are.really.the.only.possible.sources.of.significant. land.for.biofuel.expansion..They.are.often.invoked.but.rarely.quantified..How.much.of.each.exists.in.each.region?..What.are.the.prob-lems.to.be.overcome.to.bring.these.lands.into.production?.

4..Establisheffectivelandusemanagementandbestagriculturepracticepoliciesforbio-fuelsfeedstockcrops:.It.is.not.clear.whether.ILUC.factors.or.penalties.in.biofuels.programs.will.ultimately.be.successful...More.useful.may.be.establishing.land.use.management.and.best.agricultural.practice.policies.in.conjunction.with.biofuels.programs.which.some.coun-tries.are.already.doing.and.as.described.in.Section.7.

We.also.suggest.that.experts.continue.to.convene.to.discuss.these.issues.and.work.toward.establishing.methodologies.that.will.further.help.illuminate.the.complex.issues.surrounding.bio-fuels.ILUC...The.development.of.a.knowledge.product.or.tool.kit.to.help.regulators.in.countries.plan.rationally.for.the.future.may.be.advisable.as.well.

We.conclude.with.a.final.thought:

“Upon this handful of soil our survival depends. Husband it and it will grow our food, our fuel, and our shelter and surround us with beauty. Abuse it and the soil will collapse and die, taking humanity with it”..[The.Vedas.Sanskrit.Scripture.1500.BC]

figure 9: The two extremes of the IluC debate (after bauen and Howes in Woods, 2009).

ILUC optimist

ILUC pessimist



10. aCKnoWleDgemenT:Hart.Energy.Consulting.and.CABI.gratefully.acknowledge.the.financial.contributions.by.Packard.Foundation.and.Energy.Foundation.that.supported.the.production.of.this.paper.

Hart.Energy.Consulting.and.CABI.felt.that.peer.review.was.extremely.important.to.ensure.that.we.presented.this.subject.in.a.balanced.and.fair.manner,.and.that.the.most.important.and.relevant.literature.was.included..Therefore.this.paper.has.been.peer-reviewed.by.a.select.but.balanced.group.of.relevant.experts..Although.the.views.expressed.by.peer-reviewers.are.not.necessarily.represented.in.the.published.paper,.we.have.been.grateful.to.all.peer-reviewers.who.provided.valuable.comments..We.acknowledge.among.others:

•. Bliss.Baker,.President,.Global.Renewable.Fuels.Alliance.•. Bruce.Dale,.Professor,.Department.of.Chemical.Engineering.and.Materials.Science./.DOE.

Great.Lakes.Bioenergy.Research.Center,.University.of.Michigan•. Sandrine.Dixson-Declève,.Director,.University.of.Cambridge.Programme.for.Sustainability.

Leadership•. Victoria.Junquera,.Manager.of.Science.and.Technology,.Roundtable.on.Sustainable.Biofuels•. Lian.Pin.Koh,.Senior.Research.Fellow,.Institute.of.Terrestrial.Ecosystems,.Swiss.Federal.

Institute.of.Technology•. Robert.Larson,.Associate.Director,.Transportation.and.Climate.Division,.United.States.Envi-

ronmental.Protection.Agency•. Marcelo.Moreira,.Professor.Econometrics,.Economics.Department,.Columbia.University.and.

Researcher,.Instituto.de.Estudos.do.Comércio.e.Negociações.Internacionais.(ICONE)•. Martina.Otto,.Head,.Energy.Unit,.United.Nations.Environment.Program

The.following.HEC.and.CABI.staff.contributed.to.this.paper:

HEC:•. Denise.Green.([email protected]),.manager,.Europe.&.Africa•. Tammy.Klein.([email protected]),.assistant.vice.president•. John.Kneiss.([email protected]),.director,.government.affairs.&.U.S..policy•. Huiming.Li.([email protected]),.director,.Asia•. Lucky.Nurafiatin.([email protected]),.research.manager,.Middle.East.&.Asia•. Maelle.Soares-Pinto.([email protected]),.director,.biofuels,.Europe

CABI:•. Peter.Baker.([email protected]),.senior.scientist.commodity.crops•. Julie.Flood.([email protected]),.global.director.commodity.crops•. Lindsey.Norgrove.([email protected]),.global.director.invasive.species.management•. Alexis.Rendell-Dunn.([email protected]),.content.manager.plant.sciences•. Janny.Vos.([email protected]),.head.business.development,.Europe

mailto:[email protected]













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